Kale
Brassica oleracea var. sabellica
Kale is a hardy leafy brassica harvested leaf by leaf over a long cool season. Transplants or direct sowings fit spring and autumn slots, and flavor often sweetens after light frost touches mature leaves. When grown from transplants, the 50–75 day harvest range begins at transplanting, not at indoor seed sowing.
Plant family Brassicaceae · Also called leaf cabbage
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Start in cool soil for steady leaves.
Either direct sow outdoors from six weeks before the last frost through the frost date, or start indoors 6–8 weeks before frost at 0.6 cm depth. Germination is 5–10 days.
When transplants are used, the 50–75 day harvest range is counted from transplanting. Hardy frost tolerance supports autumn plantings that linger into winter in mild climates.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Use this range as a planning baseline and adjust for local conditions.
Harvest outer leaves from a wide frame.
Allow 30–45 cm between plants and 60 cm between rows. Leafy plants expand outward; tighter spacing works only for baby leaf harvests.
Containers with 30 cm depth and about 15 litres support one mature plant. Standard space need reflects both height and spreading leaves.
Core measurements
Crop-level planning range.
Crop-level planning range.
Crop-level planning range.
Crop-level planning range.
Allow for the mature form of the selected variety.
Install support early when it is required or useful.
Use frost as a flavor cue, not a stop.
Four hours of direct sun satisfies part-sun tolerance, though brighter sites thicken leaves faster. Kale outlasts many greens in cold weather.
Moderate water at 25–35 mm weekly with pH 6.0–7.5. The key tip notes improved flavor after light frost on established plants.
Sunlight
Part sun tolerant (4+ direct-sun hours/day)
Soil pH
A suitable acidity range for general growth.
Weekly water
Moderate water need.
Aim for even moisture and water deeply when the upper 2-3 cm of soil begins to dry.
Plan from transplant, not seed only.
From transplanting, maturity spans 50–75 days, but outer leaves can be picked earlier on large plants. Continual harvest extends usefulness beyond a single cut.
Succession every 21 days supplies young plants for spring or autumn. Remove oldest leaves first to keep the growing tip productive.
Read with the full crop profile.
Read with the full crop profile.
Read with the full crop profile.
Read with the full crop profile.
Harvest outer leaves first; established plants often improve in flavor after light frost.
Kale growing questions
How should kale be picked?
Harvest outer leaves first while the center keeps producing, per the key tip.
Does frost improve kale flavor?
Established plants often taste better after light frost, though severe cold can damage unhardened seedlings.
Is kale harvest measured from sowing or transplanting?
The dataset uses transplanting as harvest basis with a 50–75 day range when starts are used.
Can kale be direct-sown early?
Outdoor sowing can begin about six weeks before the last spring frost through the frost date.
Profile values are crop-level planning ranges compiled from sources S1,S2,S3,S4. Local climate and variety can change actual results.
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