Spring is just
around the corner, which means in mid to late April I will be planting the
majority of my summer vegetable garden. I'll be planting a few cool season
veggies sooner, but April, and into early May, will be the time that all of my
warm-season veggies get planted in the ground. This is when the day- and
night-time temperatures have gotten warmer allowing the soil temperature to get
warmer, which is essential for the success of warm-season veggies.
Many veggies can
be planted as transplants and are available at planting time at nurseries,
garden centers and from catalogs. Sometimes I end up buying transplants, but I
really prefer to get a head start by planting seeds for some of my crops
indoors. Planting seeds indoors instead of buying transplants allows for a much
bigger variety to choose from. Seed racks at the store have many varieties, and
if you check out the various catalogs, the choices seem nearly endless.
The particular
types of plants that I like to start indoors include tomatoes, peppers,
eggplant and squashes.
This year I am
planting several varieties of heirloom tomatoes from www.rareseeds.com and
www.territorialseed.com, which include Brandywine, Green Zebra, Yellow Pear,
Roma, and Beefsteak.
Tomatoes should
be planted indoors about six to 10 weeks before you plan to put them outdoors
in the garden, so for a mid- to late-April planting time, now is the time to
get those seeds going indoors.
Tomatoes need a
soil temperature between 70 and 90 degrees in order to germinate. If you keep
your house warmer than 70 degrees, a heating pad is not necessary, but if you
are like me and keep your home in the low 60s during the winter months, then
something to keep the soil warmer is in order. I use a heating pad specifically
designed for starting seeds. I no longer have the box (or brand name) because I
have been using it for many years, but I have seen them available at garden
centers and in catalogs. Once the seeds have germinated, the heating pad can be
removed, but try to maintain a daytime temp of at least 70 degrees and a
somewhat cooler nighttime temp.
Tomato seeds
should be planted about 1/4-inch deep and kept moist, but not soggy. They
generally germinate in six to 14 days – sometimes sooner – depending on the
variety.
I am also planting yellow, orange and red varieties of sweet bell peppers, plus Anaheim
chilies and two kinds of Jalapenos - Early Jalapeno and Purple Jalapeno.
Peppers, which
are in the same family as tomatoes, have nearly the same requirements, except
that they should be started eight to 10 weeks before you plan to put them
outdoors, and they take a bit longer to germinate - eight to 25 days.
Eggplants are
also related to tomatoes. The only planting difference is that they should be
started about six weeks before the outdoors planting time. They need a soil
temperature of around 80 degrees to germinate, and will do so in about five to
17 days.
I always plant a
number of squash varieties including Zucchini, Crookneck, Golden Zucchini,
Benning's Green Tint Scallop, Tromboncino, and Butternut.
Squashes prefer a
soil temperature of between 65 and 85 degrees for germination. The seeds should
be planted 1- to 1 1/2-inches deep. Expect germination to happen in five to 10
days.
Other varieties
of warm-season veggies can also be started indoors, which include corn, melons,
pumpkins, and okra.
The soil for
germinating seeds and growing seedlings should have a fine texture that allows
for good aeration and water retention. There are commercially produced seedling
soil mixes available. I went to OSH and found they carried two different
brands, one made by Miracle Gro, and another by Black Gold, which is formulated
for organic gardening. There are numerous brands depending on where you shop.
You will also
need containers/pots to hold the soil and the new seedlings. There are many to
choose from including plastic, peat, and coir pots, plus an assortment of
seeding trays. I like to use containers in the 2- to-3-inch size range. Smaller
ones can be used, but transplanting into a larger container will be required a
few weeks before they can be placed outdoors.
Seedlings need
plenty of light to keep them strong and healthy. Place them in a windowsill
with bright light, or place them under grow lights or a fluorescent lamp. When
using grows lights or a fluorescent lamp, the plants need to be close enough to
the light so they don't get leggy, but not so close that they burn from the
extra heat.
Water should be
applied daily to keep the seeds, and seedlings, moist but not soggy.
Diluted
fertilizer such as fish emulsion should be applied every week or so once the
seeds have germinated.
About a week or
so before you are ready to plant the seedlings in the garden, start
transitioning them to outdoor conditions by placing them in a sheltered area
outdoors to harden off. Bring the seedlings in at night or cover them to
protect from potential frost.