What to Plant in March in Washington
Your March planting guide for Washington (USDA Zones 4–9, typically Zone 7). We've broken out activities by zone — jump to yours below.
Growing season varies across Zones 4–9 — 135–290 days. Pick the zone that matches your part of the state.
🏠
1009
Start Indoors
🌿
1205
Transplant Outdoors
🌱
1220
Direct Sow
🧺
208
Harvest
Zone 7 — March in Washington★ Most of WA
1372 varieties active · Last frost April 1 · 210-day season
Alfalfa Microgreens
Microgreens · 6-10d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula
Lettuce & Salad Greens · 10-15d
Arugula Microgreens
Microgreens · 10-15d
Basil Microgreens
Microgreens · 74d
Basil, Lemon
Microgreens · 16-25d
Beet Microgreens
Microgreens · 55d
Zone 6 — March in Washington
946 varieties active · Last frost April 15 · 180-day season
Alfalfa Microgreens
Microgreens · 6-10d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula Microgreens
Microgreens · 10-15d
Basil Microgreens
Microgreens · 74d
Basil, Lemon
Microgreens · 16-25d
Beet Microgreens
Microgreens · 55d
Broccoli Microgreens
Microgreens · 7-10d
Zone 8 — March in Washington
1181 varieties active · Last frost March 15 · 240-day season
Alfalfa Microgreens
Microgreens · 6-10d
Amara
Lettuce & Salad Greens · 21d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula
Lettuce & Salad Greens · 10-15d
Arugula Microgreens
Microgreens · 10-15d
Basil Microgreens
Microgreens · 74d
Basil, Lemon
Microgreens · 16-25d
Zone 5 — March in Washington
945 varieties active · Last frost April 30 · 155-day season
Alfalfa Microgreens
Microgreens · 6-10d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula Microgreens
Microgreens · 10-15d
Basil Microgreens
Microgreens · 74d
Basil, Lemon
Microgreens · 16-25d
Beet Microgreens
Microgreens · 55d
Broccoli Microgreens
Microgreens · 7-10d
Zone 9 — March in Washington
1690 varieties active · Last frost February 15 · 290-day season
Alfalfa Microgreens
Microgreens · 6-10d
Alpine
Root Vegetables · 55d
Amara
Lettuce & Salad Greens · 21d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula
Lettuce & Salad Greens · 10-15d
Arugula 'Rocket'
Brassicas · 20-40d
Arugula Microgreens
Microgreens · 10-15d
Zone 4 — March in Washington
936 varieties active · Last frost May 10 · 135-day season
Alfalfa Microgreens
Microgreens · 6-10d
Amaranth Microgreens
Microgreens · 50d
Amaranth, Glitter Mix
Microgreens · 16-25d
Arugula Microgreens
Microgreens · 10-15d
Basil Microgreens
Microgreens · 74d
Basil, Lemon
Microgreens · 16-25d
Beet Microgreens
Microgreens · 55d
Broccoli Microgreens
Microgreens · 7-10d