Now that spring-planted lettuce, broccoli, cauliflower, cabbage, Chinese cabbage, kohlrabi and potatoes have been harvested, it’s time to prepare your fall garden. Many spring vegetables can be repeated. Beets, broccoli, Brussels sprouts, cabbage, carrots cauliflower, lettuce, peas and snap beans love the cool weather of fall. Most can be planted in the garden from late-July to mid-August.
Unless your garden is heavily infested with weeds, there is no need to till or plow the soil. If the weeds have taken over, mow them first with the lawnmower or weed-wacker. Then till as shallow as possible to destroy the weeds. Shallow or no tilling helps conserve soil moisture and delays the formation of plow pan.
Seeds of fall beets, carrots, peas and snap beans can be sown in the garden during the last two weeks of July.
If you are growing your own transplants of broccoli, Brussels sprouts, cabbage, cauliflower, Chinese cabbage and kohlrabi, it’s also time to sow those seeds indoors in air-conditioning. As soon as the seeds germinate, move them outdoors to grow in full sun.
Delay the sowing of lettuce seeds until the second week in August.
To maximize production, I sow beets, carrots and peas in double rows six to eight inches apart. To reduce the need for thinning carrots, I mix equal parts by volume of carrot seeds with dry ground coffee. Ground coffee has approximately the same bulk density and size as carrot seeds.
To minimize having to thin beets, I mix equal amounts of sawdust and beet seeds before sowing.
Soon after sowing the peas, I install 48-inch-tall chicken wire supported by bamboo stakes for the peas to climb.
Since I grow my own transplants, I direct seed using cell packs and commercial potting mix. Direct seeding means placing two seeds in each cell. This method reduces the need to transplant and results in larger plants because the growth of seedlings is not delayed. I sow the seeds at least one inch apart. If both seeds germinate, I save the larger seedling and either snip away the other seedling or carefully remove it to transplant into a cell where the seeds failed to germinate.
If you are purchasing transplants, do so soon after they appear on the market, and plant them promptly in the garden. The longer you keep those plants in the cell packs, the longer they will take to become established in the garden soil. If the transplants are growing in peat pots, tear away the tops of the pots before planting them. If the top edge of the peat pots is allowed to remain above ground in the garden, the root balls are likely to dry out because the exposed peat will wick away water from the root balls.
If you see a dense mat of roots on the outer edge of the root ball when you lift the plants from the cell pack, crush the root ball to force the root to grow into your garden soil. Root-bound plants establish slowly.