When to Plant Opalka in Zone 4a
Get the exact Zone 4a timeline for your Opalka. See localized frost dates, indoor sowing windows, and optimal companions below.
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Explore Opalka Data
Crop Dates : 4a
| Milestone | Date |
|---|---|
| Start Indoors | Mar 27th |
| Last Frost | May 15th |
| Transplant / Sow Outdoors | Jul 10th |
| Harvest Begins | Sep 23rd |
| Harvest Ends | Sep 24th |
