Late March is perfect time to plant cucumber-family vegetables
Members of the cucumber family (cucurbits) that can be planted now and into April include summer squash, zucchini, winter squash, mirliton (South Louisiana), pumpkin, gourd, cucuzzi, watermelon, cantaloupe, cushaw, luffa and, of course, cucumber.
All of these vegetables produce vines that run along the ground or climb. Summer squash and zucchini vines actually are rather short and thick and so are more bushlike than other commonly grown members of the family. Some dwarf or “bush” types of cucumbers and other cucurbits also may be available.
Members of the cucumber family produce separate male and female flowers, but they both occur on the same plant. Pollen must be transferred from the male flowers to the female flowers to obtain fruit set.
The transfer of pollen is done by bees and other insects, so it is extremely important not to spray insecticides in the morning when bees are most active. Wait until late afternoon or early evening if insecticides must be used.
Male flowers produce the pollen that fertilizes the eggs in the ovary of the female flowers, which leads to fruit formation (it is the fruit of these vegetables that we harvest to eat). It is important to understand that only the female flowers actually develop into fruit.
Cucumbers, for instance, produce enormous numbers of male flowers compared to female flowers. I have talked to many gardeners who thought they were about to see a bumper crop of cucumbers – only to watch in stunned disappointment as all of the flowers fell off without producing cucumbers.
To distinguish the male flowers from the female flowers in cucurbits, it is necessary to look at the flowers closely. The showy part of the flower is often very similar. It is behind the flower where the differences between male and female flowers can be observed.
The female flower possesses an ovary that looks like a miniature version of the fruit that will eventually form.
The female flower of a cucumber, for instance, is connected to the vine by what looks like a tiny cucumber, and the ovary of a female squash flower looks like a tiny squash. Male flowers, however, don’t have these characteristics.
Cucurbits to grow
Squash is among the most popular and productive of the warm-season vegetables. Most families need to plant only a few plants to supply them with an abundance of squash, and now is an excellent time to plants seeds or transplants into the garden.
The short-vine, bushy summer squash plants are rather large (24 to 36 inches across), so make sure you space them properly in the garden. The fruit is harvested immature while it is young and tender (your thumbnail should easily penetrate the rind).
Commonly grown summer squashes are yellow crookneck, yellow straightneck, zucchini, scallop and cocozelle.
Winter squash usually have a more vining growth habit and need more room to grow than summer squash.
Their fruit is allowed to remain on the vine until fully matured – when the rind is hard (you cannot penetrate the rind with your thumbnail).
The name winter squash does not refer to when they are grown, but rather to the fact that the fruits keep well and may be stored and consumed during the winter. Examples of winter squash grown locally are pumpkin, butternut, acorn, Turk’s turban and Hubbard.
Cucumbers generally are easy vegetables to grow. Transplants generally are available, but as with most cucurbits, they are easily grown by planting seeds directly into the garden.
Most gardeners allow cucumber vines to grow along the ground, but it is highly recommended that you trellis them.
Provide a sturdy trellis 3 feet to 4 feet tall and space plants along the base about 6 inches apart. Tests conducted at LSU AgCenter research stations show substantial yield increases for trellised cucumbers, as well as fewer disease problems and better quality cucumbers.
One of my favorite members of this family is the luffa gourd. Very easy to grow, luffa seeds may be planted directly into the garden now at the base of a 6-foot trellis. Then you’ll need to thin the plants to 1 foot to 2 feet apart when they come up.
This luffa vine does triple duty in the garden.
With attractive green leaves that stay healthy all summer and large, bright-yellow male flowers, it is good-looking enough to be used as an ornamental annual vine.
In addition, the fruit is edible when 6 inches to 8 inches long and can be sliced, breaded and fried like okra.
Indeed, two old common names for this gourd – climbing okra and Chinese okra – refer to its similarity to okra in flavor when fried.
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