Cauliflower
Dates below are counted from the average last spring frost or the average first fall frost. Enter a ZIP in the calendar for NOAA 1991–2020 station averages, or pick a zone and use the zone table.
When to plant
Soil and site
The fussiest brassica: rich soil, perfectly steady water, no stress from transplant to harvest.
Seedlings
Handle starts gently and never let them sit rootbound or dry — early stress ruins the head months later.
In the garden
For white types, blanch: when the head is egg-sized, fold outer leaves over it and clip. Self-blanching and colored types skip this.
Picking
Cut while curds are tight and smooth, before they separate into “rice.” Don't wait on cauliflower.
Gear placeholders
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Dates by zone
These pages turn the same frost offsets into calendar dates for each zone the calendar covers.