SproutSmart
SproutSmart™ Intelligent Garden Sowing

When to Plant German Johnson in Zone 1a

Family: Solanaceae Nightshade

Planting Schedule

Add German Johnson to your garden to build a schedule and get reminders.

Your Zone 1a German Johnson cheat sheet. All the dates and companions you need to get seeds in the ground successfully

Want the complete botanical breakdown and expert growing tips?

View German Johnson Guide
Botanical illustration of German Johnson

Crop Dates : 1a

Growing note: Zone 1a has only 30 frost-free days — shorter than this crop's 90-day maturity. Outdoor planting is not viable; use protected cultivation.
MilestoneDate
Last FrostJun 15th
Growing ApproachProtected Environment Only