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What to plant in April in Zone 4a

In April, Zone 4a gardeners can start indoors, transplant outdoors, direct-sow — 32 crops have a planting task this month.

Zone 4a frost: last ~05/14, first ~09/27. Dates computed from these and cited extension rules. For your exact town, use the ZIP tool.

Start indoors

TomatoesStart indoorsPeppersStart indoorsEggplantStart indoorsBasilStart indoorsBroccoliStart indoorsCauliflowerStart indoorsCucumbersStart indoorsSummer Squash & ZucchiniStart indoorsWinter SquashStart indoorsPumpkinsStart indoorsMelonsStart indoorsOkraStart indoorsWatermelonStart indoorsSageStart indoors

Transplant outdoors

BroccoliTransplant outdoorsCabbageTransplant outdoorsCauliflowerTransplant outdoorsBrussels SproutsTransplant outdoorsKaleTransplant outdoorsLettuceTransplant outdoorsOnionsTransplant outdoorsLeeksTransplant outdoorsSwiss ChardTransplant outdoorsParsleyTransplant outdoorsCollardsTransplant outdoorsKohlrabiTransplant outdoors

Direct-sow

LettuceDirect-sowSpinachDirect-sowSwiss ChardDirect-sowRadishesDirect-sowTurnipsDirect-sowBeetsDirect-sowPeasDirect-sowPotatoesDirect-sowAsparagusDirect-sowDillDirect-sow

← March   May →

Last verified 2026-08-28. Frost: NOAA NCEI 1991–2020. Zone: USDA 2023. Rules: UNH Extension, Johnny's, UGA Extension.