Robust and drought-tolerant – Mediterranean plant.
Hyssop (also known as Ysop) belongs to the Herbs category and is suitable for outdoor planting from Mid Spring onwards.
Use the Growing Temperature Sum (GTS) as a guide: Hyssop 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.
Hyssop is frost-hardy and withstands moderate freezing temperatures well. Can be planted early in spring once the ground is workable. Ideal minimum night temperature: 0°C.
Hyssop grows best at daytime temperatures between 12°C and 32°C. Night temperatures should not fall below 0°C.
Hyssop is relatively robust against mold and tolerates wetter conditions well. Still, always avoid waterlogging.
Rain sensitivity: High – Prolonged rain can cause damage – protection with a film cover or roof overhang is recommended.
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 Hyssop.
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