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How to Grow Cauliflower

By Rick Gush, Urban Farm contributor

Friday, December 16, 2011

cauliflower

Photo by Rick Gush

I found that if I continually plant cauliflower throughout the year, some of it is bound to pop up.

>I’m very glad I don’t have to grow cauliflower commercially on a large scale, because it is what I call a “sometimes” crop: sometimes it works, sometimes it doesn’t. Cauliflower deserves its reputation for being one of the most difficult vegetables to grow because irregularities in the weather can ruin a crop.

I say growing cauliflower is pretty easy because I use the “shotgun method.” I plant cauliflower several times over the course of the year; sometimes it works and often it doesn’t, but the overall effect is that we can harvest some cauliflower from the garden every year.

I can plant cauliflower early in the spring, and sometimes those plantings will make heads before the hot summer weather sets in. I can plant cauliflower in July, and sometimes the plants will make harvestable heads by October or November. My favorite time to plant cauliflower is in September and October, and those plants often grow over the winter and start producing heads very early in the spring. If the weather is cooperative, those September plantings will make heads that we can harvest in December. Overall, I’d guess that almost 40 percent of our plantings are successful.

Of course, the best planting strategy, as usual, is to look around for someone in your area who does manage to grow nice cauliflower and then copy their practices by planting the same varieties at the same time as they do.

Experienced gardeners almost always know ahead of time what problems or pests might cause trouble, and they use preventative practices to avoid these problems. Once a problem has developed in a cauliflower crop, it’s probably too late for any effective remedial treatments. So, if you see fungi ruining your crop, don’t panic and spray with fungicides. Remember this problem and consider using a preventative treatment the following year.

In my area, there are so many cabbage butterflies that I would be an idiot not to spray my young cauliflower crops with bT when they are young. If I wait until I actually see cabbage worms on the plants, it’s usually too late, and some deforming damage has probably already occurred on the developing heads.

Anyone who has tried growing cauliflower probably knows a number of the ways in which a crop can go bad. Too much heat or cold when the flowers start to form will often cause some sort of unacceptable deformation in the heads. Both nutritional deficiencies and excesses can deform heads. All of the main pests, such as fungi, cabbage worms and snails, can cause unusable heads. Too much sun can turn heads yellow or green and ruin the taste.

Cauliflower can be difficult to seed directly into the field because the seedlings are sort of picky. Buying seedlings from the nursery can also be problematic because, just like lettuce and many other plants, the best-looking seedlings in the nursery are the robust specimens, which can often be a bit root-bound. Root-bound cauliflower seedlings often switch from the green-growing phase into the flower-forming phase too quickly and produce stunted heads.

Read more of Rick's Favorite Crops »

Give us your opinion on How to Grow Cauliflower.
Submit Comment »
I must have had the beginner's luck! Twenty-five years ago I planted from seed my one and only time cultivating cauliflower (they were called mini-caulis) and all of it came up! (I planted eight.) The were the size a little bigger than a softball. I planted them in the fall and we were having some of them for Thanksgiving Dinner!
Dante, Hyde Park, MA
Posted: 3/4/2014 9:03:48 AM
I have had only a little success with cauliflower in the past, I might try more plantings through the year.
Carl, Livermore, CA
Posted: 1/4/2012 10:37:30 AM
Never have had any success growing that stuff. It's good that I don't particularly care for it, too. My wife does, though, and I think she's going to try to get me to try again. When she does, I'll keep your advice in mind.
Bruce, Las Vegas, NV
Posted: 12/19/2011 8:33:18 AM

About the Blogger

Rick Gush

Rick Gush
Rick Gush has long been a staunch organic gardener. While a student at the University of California at Davis he worked at local tomato and sugar beet farms and continued in the agricultural and horticultural industries for many years. A career move in the 1990s led him to design computer games, but no matter how much of a techie he’s become, gardening and farming remain his principal passions.

In 2000, Rick moved to Italy, where he writes to you about his cliff garden and other experiences in Italian urban agriculture.

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