What to plant in April: zone 3a
Zone 3a averages its last spring frost around May 30 and its first fall frost around September 10. Everything below is timed from those two dates, so it stays useful whether you're planting for summer or for a fall harvest.
Dormant care
- Check season-extension geararound Apr 4
Patch row cover, cold frames and hoops now so a late freeze can't catch you unprepared.
- Pre-sprout seed potatoesaround Apr 18
Chit potatoes in a bright, cool spot for 2 weeks. Sprouted pieces jump ahead once planted.
Start indoors
- Parsleyaround Apr 4
8 weeks of indoor growth before your last frost (05-30). Soak seeds 24 hrs before sowing. Cut outer stems and it comes back for years in mild zones.
- Chivesaround Apr 4
8 weeks of indoor growth before your last frost (05-30). Divide the clump every 3 years: one plant becomes six with no effort.
- Scallion (Green Onion)around Apr 4
8 weeks of indoor growth before your last frost (05-30). Sow thickly in a band and harvest by pulling every other plant: the rest fill in the gap.
- Lovagearound Apr 4
8 weeks of indoor growth before your last frost (05-30). Grows 4-6 ft tall once established; give it the back of the bed and divide the crown every few years to keep it productive.
- Catniparound Apr 4
8 weeks of indoor growth before your last frost (05-30). Fence it off if cats roam the neighborhood: they'll flatten the plant and any seedlings around it rolling in the scent.
- Tomatoaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Bury 2/3 of the transplant stem. Roots form along the buried stem for a stronger plant.
- Kalearound Apr 18
6 weeks of indoor growth before your last frost (05-30). Fall crop sweetens after first frost. Plan a July sowing for the best flavor.
- Broccoliaround Apr 18
6 weeks of indoor growth before your last frost (05-30). After cutting the main head, side shoots keep coming for weeks: don't pull the plant.
- Basilaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Pinch flower spikes the moment you see them: leaves stay sweet all season.
- Cabbagearound Apr 18
6 weeks of indoor growth before your last frost (05-30). Firm heads need steady water and steady nitrogen. Once a head feels solid, cut it: leaving it in summer heat splits it open overnight.
- Caulifloweraround Apr 18
6 weeks of indoor growth before your last frost (05-30). Cauliflower is the fussiest brassica: any check in water or nitrogen makes it button into a tiny head. Blanch white types by tying outer leaves over the curd.
- Brussels Sproutsaround Apr 18
6 weeks of indoor growth before your last frost (05-30). This is a fall crop: frost is what turns the sprouts sweet. Around 4 weeks before harvest, top the growing tip so the plant pushes size into the sprouts.
- Kohlrabiaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Harvest the swollen stem at tennis-ball size, no bigger: past that it turns woody and fibrous fast.
- Romanescoaround Apr 18
6 weeks of indoor growth before your last frost (05-30). It's slower and fussier than cauliflower; give it the longest cool-weather window you can, spring or fall, not summer.
- Radicchioaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Cool fall weather brings out its best deep red color and mellows bitterness; grow it as a fall crop where possible.
- Sorrelaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Snip flower stalks as they appear to keep leaves tender; the lemony tang fades if the plant is allowed to bolt.
- Summer Savoryaround Apr 18
6 weeks of indoor growth before your last frost (05-30). Harvest just before flowering for the best flavor, then shear the whole plant back for a second flush.
- Chamomile (German)around Apr 18
6 weeks of indoor growth before your last frost (05-30). Pick flowers at midday once fully open, on a dry day, for the strongest tea; it dries quickly on a screen out of direct sun.
- Collardsaround Apr 25
5 weeks of indoor growth before your last frost (05-30). The most forgiving green in the garden. Harvest bottom leaves upward and it produces for months. Leaves picked after a frost are noticeably sweeter.
- Napa Cabbagearound Apr 25
5 weeks of indoor growth before your last frost (05-30). Grow it as a fall crop where possible: napa bolts in spring heat but forms a tight, sweet head in cooling fall days.
Direct sow
- Daikon Radisharound Apr 4
Soil is ready -8 weeks before last frost.
- Napa Cabbagearound Apr 18
Soil is ready -6 weeks before last frost.
- Fava Beanaround Apr 18
Soil is ready -6 weeks before last frost.
- Radicchioaround Apr 18
Soil is ready -6 weeks before last frost.
- Mâche (Corn Salad)around Apr 18
Soil is ready -6 weeks before last frost.
- Peaaround Apr 25
Soil is ready -5 weeks before last frost.
Transplant out
Garden care
- Wake the bedsaround Apr 25
Turn in compost, cut down cover crops, and let the soil warm two weeks before the first sowing.
Turn this into your own calendar
Want this calendar emailed to you?
Get the full 12-month version for your ZIP area. Every sowing, transplant, and harvest window, with reminders you can add to your calendar.