Growing Kale in Zone 10a

Your planting timeline

1. Start seeds indoors~5 weeks before last frost (around December 26)
2. Direct sowonce soil warms, around January 30
3. Harvestabout 50–75 days from transplant

Best varieties for zone 10a

Stick to the most heat-tolerant kales like Lacinato and Red Russian, sowing in fall and winter and providing afternoon shade to extend the harvest.

Growing notes

Kale wants steady, even moisture — roughly 1 to 1.5 inches of water per week from rain or irrigation. Consistent watering keeps the broad leaves sweet, tender, and fast-growing; let the bed swing dry and the leaves turn tough, fibrous, and bitter while the plant is pushed toward bolting. Water deeply at the base in the morning so the foliage dries quickly, which discourages the downy mildew and leaf spots that settle into kale's crinkled leaves. A few inches of straw or shredded-leaf mulch conserves moisture and keeps the roots cool through warm spells. Container and raised-bed kale dries out fastest and may need watering more often in hot weather, while overwintered plants need far less in cold months.