By s.e. smith,
Networx
Gardening in small spaces—like apartment balconies,
concrete driveways
and postage-stamp sized yards—can feel like an exercise in futility if
you’re trying to get enough of a crop to make it worth it. Fortunately,
small spaces can actually yield a lot of produce, if you plant the
right things, handle them well, and manage your space with care. I
spoke with Gowan Batist, an organic farmer who specializes in
biointensive methods, about how to get the most out of a very small
garden.
She says to start with selecting the right containers. The best bang
for your buck in an urban area can be five gallon buckets, which she
admits don’t look that awesome, but are great for intensive gardening.
Many restaurants have extras of food-grade quality that they will
happily give away—and she does advise food-grade buckets because others
may have leftover toxins from their contents, or can produce dangerous
chemicals as a result of offgassing. (For instructions on how to make
self-watering containers in five gallon buckets that are free of
plumbing, Los Angeles gardener Mike Lieberman offers a tutorial.)
Drill holes about one to two inches up the side for drainage. This
ensures that your soil doesn’t get waterlogged, while creating a small
reservoir to keep it moist and prevent waste. For urban areas, the best
place to get soil is probably an outside source, whether recycled
potting soil from a nursery or new soil purchased from a supplier. If
you do use soil from your yard, Batist strongly advises getting a soil
test, particularly for lead, a common contaminant. Your health
department or an organization like the
Safe Urban Gardening Initiative may offer this for free or a small fee, especially if you are low-income.
Building up the soil helps produce a larger yield, and one of the
best ways to do that while also taking care of kitchen waste is to use
worm bins. Vermicomposting, as it is known, can be done in stacking
bins under the counter, and it doesn’t produce strong odors. Commercial
kits are available for people who don’t want to build their own, and
the worm casings can be mixed directly with the soil to add nutrients.
Watch out for compostable items with seeds that might germinate, like
tomatoes and melons!
For starter plants that offer high yields, one of Gowan’s personal
favorites is the potato. Using a potting soil and straw mix, gardeners
can grow a large number of potatoes in a single five gallon bucket, and
they actually provide the most calories per square foot. Radishes
offer what she calls “instant gratification gardening” because they
germinate in less than a month and you can constantly reseed to keep
them coming.
Bush beans, tomatoes, and snap peas are other options; bush beans in
particular have a high yield and are easy to grow. Another option is a
cutting mix like a mesclun blend or lettuce mix, which you can harvest
as you go. Continual harvest and resowing is a key component of grow
biointensive agriculture, and there’s no reason you can’t replicate it
on a small scale at home.
She has a few warnings for urban gardeners; one of the most critical
is herbicide drift, which can occur if people in your neighborhood are
using herbicides to manage weeds, a particular problem with large
lawns. If your plants develop twisted, bubbly leaves, it’s an indicator
that someone in the area is using herbicides. One option for dealing
with the problem is growing on a shielded sun porch, but you can also
see if you can track down the perpetrator and discuss gentler options
for weed management.
Urban areas also tend to have a lack of beneficial organisms,
including ladybugs, which eat aphids, and pollinators like bees. You
can buy ladybugs for aphid control; and there’s something rather
delightful about releasing a large clutch of them into the
neighborhood. To replace pollinators, you can be your own bee with a
paintbrush, or consider establishing a mason bee block near your
garden. These friendly pollinators don’t produce honey and don’t
require much shelter, and, critically, they don’t sting.