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🌱 Spring 2026 — Zone 1b Planting Guide

Here's everything you can plant during Spring 2026 in USDA Zone 1b. With a last frost around June 7 and first frost around August 25, you have a 79-day growing season to work with.

There are 3 planting activities across March, April, May.

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Direct Sow This Spring

PlantTypeWhenDays to Maturity
Cabbage Vegetable 60–100
Microgreens Vegetable 7–21
Savoy Cabbage Vegetable 70–110
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Your Zone 1b Garden Planner — Free

A 24-page printable planner tailored to Zone 1b. Planting dates, monthly task lists, harvest log, seed inventory, and succession charts — everything you need to plan a full season.

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Sources & credits

Every number on this page traces back to a primary horticulture or government data source. Click through to verify.