Kale Growing Guide
Kale is one of the hardiest brassicas, tolerating frost and even improving in flavor after cold exposure. Its curly or flat leaves are extremely nutrient-dense, making it one of the most popular health-food vegetables worldwide.
Growing Conditions
Soil Requirements
Soil Type & pH
Best soil types: loam, clay loam, silt loam
pH range: 5.5 - 7 (optimal: 6.5)
Drainage: good
Nutrient Needs (N-P-K)
Planting Guide
Yield & Economics
Common Pests & Diseases
Common Pests
- cabbage worm
- aphids
- whitefly
- flea beetle
Common Diseases
- clubroot
- black rot
- alternaria leaf spot
Use to identify issues early and prevent crop losses.
Growing Tips
Frost exposure converts starches to sugars, making fall and winter-harvested kale noticeably sweeter than summer crops.
Harvest outer leaves first, leaving the growing point intact to allow continuous production over many weeks.
Kale is an excellent overwinter crop in mild climates; mulch the base and it will resume growth in early spring.
Frequently Asked Questions
How long does Kale take to grow?
Kale typically takes 60 days from planting to harvest. Seeds germinate in about 6 days. The best planting season is early spring, late summer, fall.
What soil does Kale need?
Kale grows best in loam, clay loam, silt loam soil with a pH of 5.5-7. Good drainage is required.
What temperature does Kale need?
Kale grows best at 10-22°C. Frost tolerance: high. Heat tolerance: low.
What is the expected yield for Kale?
Kale yields approximately 18,000 kg/hectare under good conditions. Multiple harvests per year are possible (2).
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