Fall for Broccoli

Grow it this fall, and you will enjoy the most tender and flavorful broccoli you've ever eaten--long after the summer garden is a memory.

By Kris Wetherbee

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The secret to the best-tasting broccoli is in the seasoning—not the spices, mind you, but the time of year. Broccoli that matures during cool weather produces healthy heads that are sweeter tasting than those you pick at any other time. Grow it this fall, and you will enjoy the most tender and flavorful broccoli you've ever eaten—long after the summer garden is a memory.

Broccoli grows best in fall because spring conditions may be unpredictable. Long, cool springs, for example, cause young transplants to form small, early heads; if temperatures heat up early in spring, heat-stressed broccoli opens its flower buds prematurely. And high temperatures as broccoli matures can cause bitter, loose heads to form, leaving you with smaller and less tasty florets. In fall, broccoli produces bigger and tastier heads, as plants mature during cooler weather.

 

Broccoli Basics
When to Plant
You can easily figure the perfect time to plant broccoli seeds this fall. If you want to sow seeds directly in the garden, do so about 85 to 100 days before the average first fall frost in your area, which happens in mid to late summer in most places (read: any day now!). If you prefer to grow from transplants, figure the date for getting your plants in the ground by adding 10 days to the "days to maturity" for the variety you're growing, and then counting backwards from your expected first fall frost date. We've listed our favorite fall broccoli varieties, along with the number of days they need to mature, on the last page of this article.

Where to Plant
Broccoli grows best in full sun and where the soil is slightly acidic (pH between 6.0 and 6.8), fertile, and well-drained, yet consistently moist and rich in organic matter. The right pH and the organic matter help ensure that nutrients, particularly essential micronutrients like boron, are readily available. (A boron deficiency can cause broccoli to develop hollow stems, but adding too much is toxic to plants, so a soil test is essential.)

Fall broccoli has specific spacing requirements. If you're gardening intensively in a raised bed, space your plants 15 to 18 inches apart; for gardening in rows, set the transplants 18 to 24 inches apart within the row and space the rows 24 to 36 inches apart. Be sure to set transplants slightly deeper in the ground than they were in the pot.

Keep Them Nourished
Broccoli is a moderately heavy feeder, so work in 2 to 4 inches of rich compost or a thin layer of well-aged manure before planting. Rabbit manure is a personal favorite, though most any aged manure or compost produces big and tasty heads. After you've harvested a plant's central head, you can encourage extended side-shoot production by scratching a little nitrogen-rich fertilizer such as fish meal or aged manure into the soil around its base (this is known as sidedressing). The best time to sidedress sprouting types that have overwintered is in late winter or early spring when growth resumes.

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