Showing posts with label beneficial insects. Show all posts
Showing posts with label beneficial insects. Show all posts

Thursday, June 28, 2012

Hunter-Gatherers

or Salvage

Or gleaning:  making use of what others have left behind.  As a child I once read a Christmas story in which a family goes into the woods to cut a tree for the holiday.  When they get it home they realize that it's too tall to fit in their house, so they chop off the top and discard it outside in the snow. A family of bears wanders by, finds the tree top, and is overjoyed, because it will make a perfect Christmas tree.  They take it back to their cave, but once there they find that it's too tall. They cut off the top and throw it out into the snow, where it's found by a badger. And so the story continues, with smaller and smaller animals finding the tree top, taking it home, and cutting off the top again until just a tiny piece is left to be found by some mice. That little tip is just the right size to be a Christmas tree in their little mouse-hole, and there the story ends.

'Kerala Red' amaranth, 'Blackie' sweet potato vine, and a lonely carrot

I've been reminded of that story this week as I've been moseying around the garden, stopping at one sand cherry bush or another to see if the fruit has ripened, picking a handful of cherries to eat, tossing the pits idly away.  The recent heat has been hard on many of the plants, but others, like the cherries, have really begun to come into their own.  The warm season grasses are stretching luxuriously, and the vegetables in the micro-garden have put on a spurt of growth and bloom.  The sweet potato vine is suddenly a vine and not a collection of sad leaves; the tomatillos are a good six inches taller than they were last week.  The amaranth, heat-lover that it is, has exploded into blossom and begun to set seed.

These are amaranth plants that self-seeded last year, so they had an early start in the spring.  I'm glad to see them going to seed this soon; they've been useful to the birds.  I've been filling the finch feeders less assiduously this year—enough that the Lesser Goldfinches keep me on their route and stop in now and then, but not so much that they come to rely on the feeders like they did last year, or to expect valet parking.  They've been browsing a little more around the rest of the garden, and have lighted with particular enthusiasm on the amaranth.  Each inflorescence produces hundreds of tiny seeds, and as the birds grab at the flower spikes, many of the seeds scatter on the patio in front of the raised garden.

'Orange Giant' and 'Kerala Red' amaranth

Those seeds have been a windfall for the large ants, who swarm around them, gather them up and hurry back to their nest in the big urn of agastache.  They have have also been a windfall for the small ants, which come along later to glean whatever the bigger ones have left behind; they carry these odds and ends back to their own nests beneath the pavers in the path.  It's as if the food chain is operating in reverse, with the larger animals providing food for the smaller ones; it's certainly an example of nature's efficiency at work, letting nothing go to waste.  In any case, the ants are keeping the patio nice and tidy.

I was enjoying watching this process of gathering and salvaging among ever-smaller forms of life when I was startled by a sight that made me laugh:  a stream of sand cherry pits proceeding up the side of the urn, the large ants working in pairs to haul them into their nest.  There really is no such thing as garbage in a garden, so I may as well stop feeling lazy for tossing the pits back into the garden when I snack instead of throwing them properly away.  I'm glad to know that, even without the finch feeders, and however accidentally, I'm still doing my share to feed the wildlife.

I wonder if the ants don't have the tiny tip of a Christmas tree somewhere inside that urn.

Thursday, May 10, 2012

A Tale of Two Species

or The Boneyard

(Warning:  Nothing but creepy crawlies ahead.)

They're beginning to haunt my dreams, those lines of gray marching across the pecan shell mulch, oozing out from under the bug bath's pebbles when I replenish the water, or protesting at the sudden sunlight when I move a sheltering pot.  I wouldn't call the dreams nightmares, because it's hard to be too haunted by roly-polies.  (Try it sometime.)  They aren't even anxiety dreams, really, just minor irritants bumbling across the fertile ground of sleep and pausing to nibble on an image here and there, in the way that real roly-polies bumble around among the growing things in the garden. 

A typical scene of late.

Roly-polies (or pill-bugs, Armadillidium vulgare) are mostly useful, harmless creatures that munch on decaying matter.  But there are so many of them this year.  They're everywhere.  Every time I turn over the tiniest bit of earth, there they are.  When I water the new plantings, the roly-polies climb the house walls, turning them in places from terra-cotta to black.  When I loosen the plastic pots from not-so-recent nursery purchases, the bottoms of the root balls are covered with roly-polies.  Established plants that were sending up good spring growth have withered away, and when I dig into the soil to investigate why, all I find are roly-polies.  Dozens of roly-polies.  Not content with the mulch, they're beginning to feed on the roots.  They're beginning to haunt my dreams.  Or have I mentioned that already?

The thick layer of mulch is probably the culprit, the extra moisture and organic matter making it possible for the 'polies to breed and feed beyond what the land would normally allow.  Otherwise the mulch has been good for the garden.  The soil beneath the biggest sand cherries, where I've let the leaves lie every autumn (another culprit) before covering them with pecan shells in spring, has almost become "woodland" soil after four years.  It's loamy, friable, and dark brown.  It's a pleasure to dig.  It holds moisture beautifully.  The decomposers are doing their work, and even earthworms make themselves at home there.

Digging into the gravel-mulched beds, on the other hand, is like digging into brick.  The soil is pale sand and clay with bits of decomposed granite, suited to the more rugged plants growing in it.  It doesn't attract roly-polies, but boy, does it attract ants.  They, too, are useful; their tunnels keep the soil aerated, and their appetites account for many a grub and miller moth.  They push soil out onto the patio, and I sweep it back into their nest; they push it back out onto the patio, etc.  We all get a little gentle exercise.

This year some of the ants have made their home in one of the big urns of licorice mint.

"Abandon hope, all ye who enter here."  Unless you're an ant.

Very busy they are, climbing the steep outer sides of the urn and under its lip to bring their heavy loads to the top.  I have a front-row view of them from the Adirondack chair, and see more of their struggles than is perhaps absolutely necessary.

Some of the struggles are jaw-droppingly epic.

Many a roly-poly has been carried up the side and disappeared over the rim.

But then the ants abandon them on top of the soil in the urn.  Why?  Why have they gone through this enormous labor, defying gravity the entire way, only to change their minds?  I suspect that they do bring the pill-bugs into their nest at first, where they eat or store the tasty parts and then spit out the "bones," leaving the inedible chitin to decay elsewhere.  The rounded hulks slowly fade to white among the equally hollow hulks of pecan shells.  Their skeletons serve as...warning? decoration? mulch? in the ants' front garden, until the little decomposers decompose, gradually disintegrating into the soil where they feed the roots of the agastache.



In a desert garden pecan shell mulch and gravel occupy different worlds, the former belonging to (comparative) moisture, broad-leafed greenery, and partial shade; the latter to aridity, feathery gray-greens, and scorching sun.  In a very small garden, I wonder sometimes whether those worlds can live side by side and be at peace.  The mulch loving roly-polies concern me when they get out of hand; they're a sign that maybe I've skewed the balance too far toward moisture and greenery.  But then, the gravel loving ants are still here to keep them in line, more or less.  Maybe the balance is working.

Pleasant dreams, everyone.

_____________
In case you can't get enough, Donna has an entertaining post on ants over at Garden Walk, Garden Talk.

Wednesday, April 20, 2011

A Balancing Act

or The Earth Day Reading Project

As I was walking the circle path around the garden the other day, I was dismayed to discover this:


Leaf-curl plum aphids had invaded my biggest, shaggiest monster of a sand cherry—one of the inner branches was pretty well lost to the world by the time I discovered it.  These are tricky aphids (for me) to get rid of—they curl the leaves around them and become impervious to sharp sprays of water.  Even if I were to use pesticides (which I don't), it's doubtful whether the pesticide would reach them.  Thinking back to my first year here, when the garden was decimated by the nastier types of insects, and worried about a repetition, I took hasty action and clipped the two worst branches off, hoping to nip the the problem (as it were) in the bud.

I should have trusted my garden, trusted the effect of the last few years spent filling the bug-bath with water twice a day, providing sheltering mulches and ground-covers, and planting nectar-rich flowers to ensure constant bloom—all the things needed by the beneficial insects that keep the pests in check.  Because look at what was on the undersides of the leaves:


Lady beetle eggs.  Half a dozen leaves with clusters at the bases.  The natural process had worked; the aphids would have been brought under control without my intervention (and boy, was I disgusted with myself for having gotten in the way).  Fortunately, more lady beetles are ready to replace the ones I pruned away—I spotted eight of them, including two mating pairs, in a one-foot area yesterday.  It looks as if the process is still working in spite of me.  In fact, if you're not squeamish, look at what this lady beetle is munching on  (as always, you can click to enlarge) (if you're into that kind of thing):


Death and destruction come to the aphids.  Bwahahahaha.

I've written more about the ways I've learned to protect my garden elsewhere.  For now, I want to pay tribute again to Sally Jean Cunningham's Great Garden Companions, the book that taught me that organic gardening isn't about gardening "normally," only using wimpy pesticides and fertilizers instead of the chemical kind; rather, it's about creating ecosystems that can be self-balancing, about creating a place where all kinds of lives (including pests', and including yours) have their needs met.

_______________________________

Jean Potuchek, who writes Jean's Garden, invited me to take part in the Earth Day Reading Project organized by The Sage Butterfly, to "list at least three books that inspired you to perform any sustainable living act or inspired you to live green, and then tell us why they inspired you."  In addition to sharing her gardens in Maine and Pennsylvania, Jean writes regular book reviews.  Her discussion of Doug Tallamy's Bringing Nature Home made me wish that it had been one of my inspirations.  Alas, it hasn't yet, but only because I am behind the game.  Instead I would like to point the inquiring reader to:

1)  Cunningham's Great Garden Companions.  Cunningham gardens in Tompkins County, New York, with acidic soil, 180+ cloudy days per year, 35 inches annual rainfall, and frequent sub-zero F winter temperatures.  I garden in the high desert of New Mexico, with 300+ days of sunshine annually, 8 inches of rain, "soil" (ahaha) so alkaline that it bubbles if you pour vinegar on it, and baking summer heat.  Cunningham's ideas work just as beautifully here as they (apparently) do in New York.

2) Willa Cather's Death Comes for the Archbishop.*  A fictionalized account of the life of Jean-Baptiste Lamy.  I don't know that this book has pointed me to a particular action, but its appreciation for the southwest has reminded me what a fierce love for a landscape is like.  Perhaps the strongest urge to protect the land comes not from those who are most idealistic about it but from those who understand it best, who love it the most passionately.

3) Amy Dacyczyn's Tightwad Gazette.  Dacyczyn (pronounced like "decision") is the voice of radical frugality, but she also makes (what should be but apparently isn't) the obvious point that consuming less takes less energy and produces less waste.  Dacyczyn essentially opts out of the capitalist credo that more is more.  She lives abundantly by being creative and working hard—and by thinking for herself about what she does or doesn't need, rather than letting Madison Avenue do the thinking for her.** 


I encourage you to visit some other blogs as well where the authors take different approaches to sustainable and/or green living.  B_a_g at Experiments with Plants chooses to grow extra plants for the slugs rather than put out slug pellets.  Diana and Jurg at Elephant's Eye give thoughtful homes to wounded sparrows and provide bathing ponds for wagtails and dragonflies.  Nate at The Scholar's Garden is currently swamped with scholarly work, but he is also busy creating homes for bees and embracing a green growing lifestyle at an age when I was perfectly happy with mega-stores and "big ag," and ready to use pesticides if they just got rid of the bugs.

Even if they got rid of all of the bugs.
_________
*  Spoiler alert:  The archbishop dies in the end.

**In a roundabout way she reminds me of Dorothy Sayers' Murder Must Advertise, a mystery novel written in the 1930's, whose amateur sleuth, Peter Wimsey, goes under cover in an advertising agency.  He has a horrible time finding paper evidence of a crime, because all of the paper in the office is recycled.  In the 1930's.  When people thought that being frugal was a virtue, and that re-using things was common sense. 

Sunday, March 13, 2011

The Rhythms of Care

or Food and Drink

Work, and of the best sort. 

Yesterday:  a few minutes watering seedlings in the micro-garden; a trip to the hardware store for concrete blocks, rebar, and bamboo poles; an afternoon spent chatting with the neighbors and turning my purchases into a stand for the rain barrel, stakes for the Lady Banks rose (trust me, she would eat a fancy trellis for lunch), and supports for the "Coronation Gold" yarrow, which otherwise will give way to the first windstorm (and every windstorm thereafter).  —An afternoon to water all the beds, as the 0.11 inches of moisture we've received so far this year can't kick-start spring in a young garden; a few more minutes to empty the pots of perennials that didn't survive our once-in-fifty-years cold spell.

Today:  more of the same only better, in 55°F morning temperatures, in a sheltered, walled garden that warms to tank-top comfort levels.  The tasks:  cleaning and filling the bird and bug baths (setting some dried navy beans to soak); moving the "volunteer" feverfew seedlings to containers, where their blossoms will attract beneficial insects for weeks in mid-summer (taking a few moments' rest in the Adirondack chair); watering the seedlings in the micro-garden again (ducking inside for a glass of water); dividing the "Moonshine" yarrow and moving the divisions to a sunnier bed, out of the growing desert olive trees' shade (lying down for an hour's bedrest); moving the Keller's yarrow from the sand cherries' shade to the sunny, more-or-less native bed (putting the beans on to cook); working coffee grounds and tea leaves into our alkaline, "decomposed granite" soil (harvesting tarragon and garlic chives).  Resting, before the white bean salad with Shannon's citrus-tarragon vinaigrette goes on the table.

This weekend, I've been thinking about the rhythms of care—the seasonal care we give to the garden, the daily care; the sometimes competing, sometimes complementary care we give to ourselves; and the sometimes out-of-the-blue priority we give to a work ethic that may or may not be helpful.  It's been disconcerting to remember the extent to which need (the yarrows, in too much shade; a thirsty human) can end up competing with function (the garden could use some filler here; I still have this one task left to finish...).  How do we balance them—work and care? the drive to accomplish something right away and the natural rhythms of growth, of need?  Somehow or other we do, and things either work out or they don't.  For the most part, only small things hinge on our decisions—one human, one garden, a handful of plants, perhaps a few bees; things that matter in a small sphere, that may accumulate to have a wider effect, but that don't (with an ironic bow in the direction of chaos theory) affect the world at large.

From time to time, however, something mammoth interrupts the easy seasonal rhythm of care, reminds us of the world beyond our garden walls, shouts that other gardens need tending, that other humans need the food and drink of compassion.  While our kindred in Japan have a strong and resilient system to cope with natural disasters, the recent tsunami reminds us all how fragile our security really is, how great a leveler nature can be.  I haven't researched the organizations that exist internationally to contribute toward disaster relief, but in the USA, InterAction.org is a starting-point directory of NGOs; other longstanding charitable organizations are accepting contributions as well, of course.

Sometimes care extends beyond our garden walls, and giving becomes our work—work of the very best sort.

Wednesday, October 27, 2010

Meddlers

or Hastening the Inevitable, Part II

In my last post I wrote about letting go, especially of the care and upkeep of the micro-garden.  To let go was a relief, a pleasure, a grace—and not just any old grace at that, but a lovely, lovely one.  By relinquishing the remaining plants in the micro-garden to their fates, I was simply yielding to the inevitable; rather than trying to elbow autumn out of the way, I was going to curtsy politely to it, extend an ushering hand, and say graciously, "After you."  Death would come decorously to the micro-garden, and all would be peaceful and sweet, perhaps even a little soulful, as I practiced the virtue of non-attachment and allowed nature to pursue its course unimpeded.

But when I wrote of hastening the inevitable, that did not mean that I wanted any help.

Now that all of the flat-blossomed flowers elsewhere in the garden—the yarrow, feverfew, and marguerite daisies so beloved by beneficial insects—have more or less stopped blooming, and the bugbath isn't filled so assiduously, and the pest-eaters have grown sleepy and slow, aphids have moved in to the micro-garden in droves.  Ironically, the plants they are attacking are the perennial bunching onions, which I planted in part to deter pestilential insects, the entire allium family supposedly being anathema to all that goes on more than two legs.  Ha.  The onions are covered.


I know these aphids of old, and nasty little blighters they are.  A few winters ago they obliterated every "Powis Castle" artemisia in the neighborhood.  (Which ought to be a lesson to landscapers not to plant the front and side yards of an entire neighborhood with the same five species, thus creating easily destructible monocultures, but probably won't be.)  They are impervious to frost; the sharp spray of water from a hose that is supposed to wash them away and kill them only allows them to take a little exercise while incidentally making a royal mess of the kitchen window; insecticidal soap just gives them a fresh, clean scent.  Where are all of those praying mantises that were peeking in my windows a few short weeks ago?  Where are the lady beetles, the lacewings, the hoverflies?

Gosh darn it, I like the onions.  I was planning on continuing to  harvest them enthusiastically through at least November.  Aphids, why can't you just munch on the sweet potato vine?  I'm done with that.  Or the amaranth?  Help yourselves—there's plenty for all and sundry.  The basil? marigolds?  Go for it.  But why the onions, you perverse little pests?

Grrrr.

(Do people who have let go usually growl this much?)

Wednesday, July 14, 2010

Mi jardín es su jardín

or
Share and Share Alike

I expected gardening to be about plants; I didn’t expect it to be quite so much about morality.  Carol Gilligan’s In a Different Voice describes morality as the struggle to balance the needs of the self against the needs of others.  A variant on the idea of loving your neighbor as yourself, it brings the occasional (frequent?) tension between the two into the foreground in a way that I find rather a relief.

I had originally planned my garden as something approaching a potager, with native fruiting bushes and Mediterranean herbs in a semi-formal design, and vegetables grown in containers.  I live in a new, urban infill development which, when I moved in, was still surrounded by vacant, weed-infested land.  I was the first of my neighbors to plant anything, and that first summer, every leaf-roller, aphid, potato leaf-hopper, flea beetle, and cabbage moth in the neighborhood descended gleefully on my fledgling garden.  My infant trees were leafless by July, every tomato had withered with curly top virus, and the vegetable greens were all eaten away to the midrib.  Only the native plants and herbs survived.  (You can pretty well bet that any plant native to New Mexico does not need a lot of coddling.)

I read more widely about organic forms of pest control and, at my sister’s recommendation, came across Sally Jean Cunningham’s Great Garden Companions.  Cunningham suggests creating a welcoming environment for garden beneficials by including habitat plants, introducing water at ground and (human) waist height, and interspersing nectar-rich flowering plants among your edibles.  This attracts beneficial insects (and other wildlife like toads and birds), which will then keep the pests down to manageable proportions.

Since then, I've tried to apply Cunningham's principles, which are partly about attracting, but essentially about sharing.  The bird and bugbaths are always filled.  The portion of my garden given to flowers and habitat plants has grown, and the part devoted to edibles has shrunk.  I grow vegetables primarily in a 2’ x 4’ “micro-garden” (the main planting area is about 15' x 15'), and while I still have fruit bushes and herbs, the rest of the garden is “beneficial” planting.  The air hums with honeybees and bumblebees.  Mr. Jackson overwinters in my potted mint.  Finches maintain a running commentary from the tree branches.  And I have seen hoverflies, orb weavers, lace wings, praying mantises, lady beetles, and parasitic wasps enjoying the flowers, the water, and the aphids.  The pests are minor irritations rather than plagues (though the leaf hoppers still get to my tomatoes every year, confound them!).

In “sacrificing” growing space to foster an ecosystem, the ecosystem has given back to me.  In giving more of my garden over to nurturing the urban wildlife, the part I have reserved for myself has flourished.  My harvests have increased (and the headaches have decreased) as I have learned to balance my own needs against the needs of the creatures in my environment—even the pests among them.

Is this morality?  Enlightened self-interest?  Good karma?

Or is it just the way things are supposed to work?

Friday, June 18, 2010

Violence Is Golden

or

Why Gardeners Are Like the Mob

I wonder sometimes about the morality of gardeners, especially organic gardeners. Well, especially me. Here I am, trying to raise vegetables that wouldn't naturally grow in my environment. Every one of those succulent, juicy, tender salad greens and sugar-snap peas and tomatoes is adored by plant-eating insects--and who can blame them? But since I don't want to use pesticides to protect my produce, I attract carnivorous insects instead who will do their level best to devour all of the vegetarian ones.

I don't know about you, but I know how I feel during films at the natural history museum when T-Rex goes for the peaceful plant-eaters. Or when the pride of lions takes down the lonely baby elephant. Or when the fox finally catches the despairing rabbit. Wicked predator! Poor prey! Sure, it may all be the course of nature and blah blah blah, but how the heart weeps for the harmless little creature that's writhing in agony, desperate to stay alive...

Yet in the garden I happily go out of my way to attract the predators, which, in a masterful Orwellian move, organic gardeners call "beneficial insects." Oh, the irony: first I invite the planteaters to a banquet the likes of which they've never seen, and then I call in the big guns to kill 'em off. As I recall, the Borgias did stuff like that. Is it good? Is it moral?

Frankly, it's irresistible. After the first radish gets eaten to the midrib by cabbage moth caterpillars or the first tomato leaves start to curl with an insect-borne virus, I am more than happy to consort with the thugs of the insect world. "Ladybird?" A charming name for an entire species of serial killers. "Lacewing?" Oh, yeah, sure--as in "Arsenic and Old..." "Praying mantis?" Soulmates with the crusading Abbot Amalric ("Kill them all--let God sort them out."). I love them. And I will gladly take out a contract on the life of every last aphid and leafhopper.

Meet my cousin Guido, little planteaters...