When to Plant Rainbow in Zone 1b
Your Zone 1b Rainbow cheat sheet. All the dates and companions you need to get seeds in the ground successfully
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Crop Dates : 1b
Growing note: Zone 1b has only 61 frost-free days — shorter than this crop's 70-day maturity. Outdoor planting is not viable; use protected cultivation.
| Milestone | Date |
|---|---|
| Last Frost | Jun 1st |
| Growing Approach | Protected Environment Only |
