Very frost-hardy – can stay in the bed through winter.
Leek (also known as Lauch) belongs to the Vegetables category and is suitable for outdoor planting from Early Spring onwards.
Use the Growing Temperature Sum (GTS) as a guide: Leek can be safely transplanted once the local GTS has passed the threshold for Early Spring and no frost is expected. GrowPilot.guide calculates the current GTS for your location automatically.
🗓️ Tip: Always check the 10-day weather forecast before planting outdoors. The GTS is a helpful guide but does not replace a frost check for your specific area.
Leek is very frost-hardy and survives even hard freezes. Can be planted in late winter or very early spring. Minimum night temperature: -5°C (ideal, not a strict requirement).
Leek grows best at daytime temperatures between 8°C and 22°C. Night temperatures should not fall below -5°C.
Leek is relatively robust against mold and tolerates wetter conditions well. Still, always avoid waterlogging.
Rain sensitivity: Low – Relatively rain-tolerant – good drainage is sufficient.
GrowPilot.guide calculates the current Growing Temperature Sum (GTS) for your location, shows the phenological season and gives you a daily personalised analysis – including frost warnings, mold risk and optimal planting time for Leek.
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Start free now →Expert growing knowledge to help you cultivate Leek successfully:
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