Perennial – re-sprouts every year.
Fennel Fronds (also known as Fenchelgrün) belongs to the Herbs category and is suitable for outdoor planting from Mid Spring onwards.
Use the Growing Temperature Sum (GTS) as a guide: Fennel Fronds can be safely transplanted once the local GTS has passed the threshold for Mid 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.
Fennel Fronds tolerates light frost down to about −3°C. Extended cold periods or hard frosts are harmful. Once night temperatures stay above 4°C, it is safe to plant outdoors.
Fennel Fronds grows best at daytime temperatures between 14°C and 28°C. Night temperatures should not fall below 4°C.
Fennel Fronds is relatively robust against mold and tolerates wetter conditions well. Still, always avoid waterlogging.
Rain sensitivity: Medium – Moderate rain is tolerated, but waterlogging should be avoided.
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 Fennel Fronds.
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