With a minimal investment of time (1 -2 month), space (4
inches wide), and money ($25), beginning gardeners can enjoy rapid results by planting
seeds in an indoor window sill garden.
On my 4 inch wide window sills of two, four foot (double
paned) windows that face south, I fit six plastic six- pack planters each
(twelve packs total, 72 plant holes). Starting March 10 (still winter here - it snowed until May 3), I planted the seeds of
a variety of herbs, flowers, and vegetables. My expectations were low because
the setting wasn’t the greatest – the window doesn’t offer full sun all day
(because of spruce and birch trees) and the temperature inside our log cabin varies
from a low of 53 at night to a high of 69 during the day, and the temperatures just beyond the window were below freezing every night.
May 3, 2013 snow fall in front of the shower house |
Of the 21 plants I started indoors, below are my notes on
the fastest, easiest and most robust ones that grew on my window sill from
March 10 through May 5 (today), during one of the coldest Aprils in Alaskan
history. Since they did so well for me, I hope the results inspire readers to
try seedlings on window sills of their homes, classrooms, or perhaps, offices
or hospital rooms.
Flowers:
Cosmos is an easy annual flower to start indoors or
outdoors in Alaska. It looks like a
daisy, but with a broader range of colors.
It has lacy foliage, and can grow up to three feet tall. Started indoors on March 10, cosmos was the
star of my window sill garden. Every
seed germinated within a few days, faster than any other. The plants grew rapidly, too, to 4-12 inches
tall with lots of leaves within six weeks.
Today, two plants are forming the bud of a future flower. The seeds can be planted directly in the
garden too (after frost), and will bloom early summer to frost. Best of all, cosmos prefers to be
neglected. Too much care once they are
established can inhibit the flowers!
What’s not to like?
Nasturtium - 6 weeks |
Nasturtiums are a wonderful flower for Alaska (and just
about anywhere else, too). They come in
climbing, trailing, and bushy varieties and have a rather tropical look to the
flowers, which bloom for about ten weeks.
They are recommended companion plants for certain vegetables, like
cabbage. Every part is edible, too! These are particularly good seeds for
children because they are large enough to handle, about the size of a green
pea. Nasturtiums require three special
treatments to start but after that, they are among the easiest to grow. (1) The seed can suffer freeze damage, so my Alaska supplier no longer ships them in winter. Rats. How will I start them indoors next year? (2) The seed pods are hard, so to speed up
germination, SOAK them overnight before planting. (3) Then, they require DARKNESS to
germinate. I simply put the first six
pack of seeds beneath a table and the second one I tented under tin foil. Three seeds sprouted and yielded healthy,
handsome plants. By six weeks, all of
these had four attractive leaves and were becoming root bound in the little
seed pack so I transplanted them into a hanging pot. A week later, each was a healthy 6-8 inches
long, leaning toward the sun. The other
three seeds were still hard, so I soaked them again and replanted them the next
day, but they still had not sprouted 8 days later. Maybe duds.
So I soaked another set. We’ll
see. I would like several more. After danger of frost, I’ll hang the pot
outside for a profusion of 6 foot trailing orange and yellow flowers. How lovely.
Herbs:
Many herb plants have teeny, tiny seeds which may be better
handled by adults than children. They
are so small that some “hijacked” a ride on my fingers to another pot, and
popped up where I didn’t expect them!
Basil seeds will sprout faster if you soak the seeds
first, on a damp paper towel or napkin for 6-8 hours. With this treatment, of all the herbs, the
basil plants sprouted fastest, within a week.
Within six weeks, I had several small plants with 4-6 glossy leaves each
and that delicious scent. Note: don’t let this plant dry out and don’t let it
get cold. In my part of Alaska, it will
be a greenhouse plant.
Cilantro - 4 weeks |
All of the cilantro planted on 3/28 sprouted and grew
rapidly. The familiar looking true
leaves started to appear three weeks later.
Before that, the sprouts looked like grass and I wasn’t sure I had labeled
them correctly! Nearly a month later, on
4/24, some of the plants were becoming root bound. (Cilantro has a long tap
root), so I transplanted them to deeper pots.
Cilantro is cool tolerant. When
frost danger is past (mid-May), the pot will remain outside on the porch.
Anise hyssop seeds require a cold start. So I just put the packet of seeds outside for
several days (temperatures 0-+20). All
sprouted and put out many side leaves quickly.
These attractive plants will be transplanted into the garden, where they
will grow to 2-4 feet tall, with leaves that taste like licorice, topped by a
lovely thin, spike of purple/blue flowers (other hyssop variants range from
yellow to red). They make a good border
plant in full sun. The early leaves
looked much rounder and more pinked (as if trimmed with pinking shears) than
the long, serrated leaves I expected. I
didn’t recognize the seedlings except by the taste of the leaves.
I love chives and planted garlic chives along my
window sill. The seeds took longer than a week to sprout but once emerged, the
very skinny seedlings (like needles) reached more than 2 inches tall within a
week and continued their fast pace to date. Chives are easy care perennials
(and easy to divide, too) with very attractive flower “balls” on stalks above
the thin, grass like leaves (both flowers and leaves are edible). Those in my garden were wild ones that I
transplanted, and their pink flowers are often the first to bloom in the spring. Intermixed with other flowers, their scent
can deter voles and hares (supposedly) but not my free ranging chickens, (which
have no sense of smell). In the window
sill garden, I sowed garlic chives. These
will have a large white flower “ball” on a tall stalk that will bloom later in
the summer than the wild ones.
Vegetables:
Leaf lettuce planted on 3/10 we started to
harvest in mid-April. The leaves didn’t
really look like traditional wavy leaves of lettuce until after the first
cuttings prompted additional growth. To
be frank, the type I planted didn’t have much flavor or even much texture, but
it was satisfying to eat something fresh so quickly, and my meat rabbits love
it.
Broccoli and cucumber planted on 4/17 germinated much more rapidly than I
expected, within three days! Cabbage
followed a day later. How fun is
that! Each is an interesting looking
sprout, easy to distinguish from one another.
Cucumber seeds are a good choice for children because they are large
enough to see and recognizable as those seen in the mature vegetable. The cucumber will be a greenhouse plant and
the other two can tolerate a light frost and will go in the garden early.
Carrot: Carrot
seeds are so tiny that I didn’t try to parse them out among the six packs but
just started in a deep pot. You just
sprinkle them on top of soil and then spritz water over them until they
sprout. This took about a week. All of a sudden, the pot looked like it had a
thin field of grass. Once the sprouts
get to be 2” tall, you thin them, eating the intervening sprouts (not much
flavor or texture at that point).
Notes:
1: Supplies:
The soil in which I planted the seeds was a combination of
Miracle Gro and Perlite. Packet of
seeds cost between $1-2.50, depending on the plant. I bought my seeds from Denali Seed Company
in Anchorage (www.bestcoolseeds.com and Pine Tree Seeds (in VT).
2: Light:
I relied solely on natural light. My southern windows do not provide full sun
exposure all day because of several tall birch and spruce trees which provide
partial shade at various times of day.
Over the months of March and April, we had one uninterrupted 10 days of
sunshine, but also three 3-5 days each of snow fall (including April
30, May 1, and May 2) and multiple days of overcast but bright days.
3: Temperature
My home is a bush cabin that is heated by a woodstove. Interior temperatures are variable, reaching
lows of 53 degrees at night and an occasional high of 69 during the day. If
your temperatures fall in a narrower range, I imagine that your results may be
even better than mine.
Helpful hints
1: Every single
seed/sprout performed best when I tented it loosely under plastic wrap spritzed
with water (on the underside) to provide a more humid environment for the plant
than the ambient dryness of the cabin.
(I tented some and not others to test this out)
2: The single
greatest cause of potted plant death is overwatering. Recommendation: use a spray
bottle to keep the soil moist before the seed emerges, and then for the
little sprout. Don’t water deeply until
a bit later in plant development. Stick
your finger in the soil down to your second knuckle to assess moistness
3: For beginners, the
most satisfying seeds are those that sprout fastest, so read the labels of
plant packets for your region. Although some of my
seeds never grew at all, most sprouted at or earlier than the seed label said.
The fastest sprouters for me were cosmos, broccoli, cucumber, and cabbage. The fastest growers were cosmos (8-12” in six weeks), garlic chives, nasturtium (up to 8 inches in 4 weeks)
and anise hyssop plants which had as many as ten leaves on small, attractive
plants within 4 weeks.
4. Large seeds are
easier to for children to handle. Among
my list, moonflower, nasturtium and cucumber seeds are the biggest (but only
one of six moonflower seeds sprouted for me).
5: Started from seed,
you may not recognize the young plants at first, as the initial leaves (which are really part of the seed pod) don’t
look like the “true” leaves you see in more mature, store bought plants. So LABEL them with popsicle sticks or
something.
6: Denali Seed Company offers wonderfully informative
growing hints on many plants well suited to Alaska on its website, www.bestcoolseeds.com. Sites with good planting information for all
regions include eHow, About, and Dave's Garden. The very best resources of all tend to be Community
Extension papers available, for example, from University of Fairbanks (or other
state colleges) Just Google the plant
name + Alaska or + UAF.
Conclusion:
From this window sill experiment, I learned how easy it is
to grow seedlings indoors, even in less than optimal sunshine and temperature
control. I experimented with a variety of requirements, including darkness to
germinate, cold starts, soaking.
Overall, a MUCH higher percentage of seeds sprouted than I expected, and
several of the plants grew faster or became root bound faster than I
anticipated. It was very satisfying!
Since this spring is exceptionally cool and snowy, I am unable to transplant them outdoors or in
the greenhouse as early as I expected, so I wish I had more medium sized
pots. Overall, I thoroughly recommend
window sill gardening for even the smallest home or classroom window. Even if you never transplant them elsewhere,
the ease of sprouting is low key, low cost entertainment. Just spritz them twice a day! Enjoy.
Loved your blog post on seeds. I grew some tomato plants from seed this winter. Thought I'd get them in the ground early, but we had snow on May 6 here in Kansas City so it'll be just about Mother's Day before I get them planted.
ReplyDeleteDon, Kansas City
I could almost taste the hothouse tomatoes with basil that you plan to grow, served with Basalmic vinegar, oil and maybe some fresh mozzarella (you probably know you can freeze it then use it as fresh when thawed.)
ReplyDeleteThough I would miss my children and grandchildren I would welcome some solitude but not as much as you get! - Sherry, Houston, TX
Thank you for sharing your thoughts. I truly appreciate your efforts and I
ReplyDeleteam waiting for your next post thank you once again.