Zone 4B — April
What to Plant in April in Zone 4B
April in Zone 4B:
229 crops to start indoors,
69 to plant or direct sow outside, and
0 entering harvest window.
Last frost averages May 11. Reference city: Duluth, MN.
229 Start Indoors
69 Plant Outside
0 Harvest
Start Indoors in April
| Plant | Type | Start Indoors | Transplant Outside | Harvest Window |
|---|---|---|---|---|
| Alaska Early Pea | legume | Apr 13 | Apr 20 | Jun 14 – Jun 19 |
| All Season Cabbage | brassica | Apr 13 | Apr 27 | Jul 6 – Jul 16 |
| All Year Round Cauliflower | brassica | Apr 13 | Apr 27 | Jul 1 |
| Berry Blue honeyberry shrubs | berry | Apr 27 | Apr 27 | Perennial — see plant page |
| Black Salsify | root vegetable | Apr 6 | Apr 13 | Perennial — see plant page |
| Blue Flax Flowers | flower | Apr 20 | Apr 27 | Perennial — see plant page |
| Bouquet Dill | herb | Apr 20 | Apr 27 | Jun 16 – Jul 1 |
| Broad Windsor Fava Bean | legume | Apr 13 | Apr 20 | Jul 4 – Jul 14 |
| Brunswick Cabbage | brassica | Apr 13 | Apr 27 | Jul 16 – Jul 26 |
| Calabrese Broccoli | brassica | Apr 13 | Apr 27 | Jul 1 |
| Carentan Leeks | allium | Apr 6 | Apr 27 | Jul 26 – Aug 15 |
| Cascadia Sugar Snap Pea | legume | Apr 13 | Apr 20 | Jun 24 – Jun 26 |
| Charleston Wakefield Cabbage | brassica | Apr 6 | Apr 20 | Jul 4 |
| Chervil | herb | Apr 13 | Apr 20 | May 25 – Jun 4 |
| Chinese Forget-Me-Not Flowers | flower | Apr 20 | Apr 27 | Jul 1 – Jul 21 |
| Copenhagen Cabbage | brassica | Apr 13 | Apr 27 | Jul 1 |
| Crimson Cherry Rhubarb Root | vegetable | Apr 6 | Apr 13 | Perennial — see plant page |
| Dandelion | herb | Apr 13 | Apr 20 | Perennial — see plant page |
| Danish Ballhead Cabbage | brassica | Apr 13 | Apr 27 | Aug 5 – Aug 15 |
| Delicatesse Blue Kohlrabi | brassica | Apr 13 | Apr 20 | Jun 14 – Jun 19 |
| Delicatesse White Kohlrabi | brassica | Apr 13 | Apr 20 | Jun 14 – Jun 19 |
| Di Cicco Broccoli | brassica | Apr 13 | Apr 27 | Jul 1 |
| Drumhead Cabbage | brassica | Apr 13 | Apr 27 | Jul 26 – Aug 5 |
| Dukat Dill | herb | Apr 20 | Apr 27 | Jun 6 – Jun 16 |
| Dutch Yellow Shallots | allium | Apr 6 | Apr 13 | Jul 12 – Aug 11 |
| Early Jersey Wakefield Cabbage | brassica | Apr 6 | Apr 20 | Jun 24 – Jul 4 |
| Early Purple Broccoli | brassica | Apr 13 | Apr 27 | Jul 1 |
| Evergreen Parsley | herb | Apr 20 | Apr 27 | Jul 6 – Jul 21 |
| Fenugreek | herb | Apr 20 | Apr 27 | Jun 1 – Jun 16 |
| French Red Shallots | allium | Apr 6 | Apr 13 | Jul 12 – Aug 11 |
| Giant Imperial Mix Larkspur Flowers | flower | Apr 13 | Apr 20 | Jul 29 – Aug 18 |
| Giant Musselburgh Leeks | allium | Apr 6 | Apr 27 | Aug 5 – Aug 10 |
| Glory of Enkhuizen Cabbage | brassica | Apr 13 | Apr 27 | Jul 26 |
| Golden Acre Cabbage | brassica | Apr 13 | Apr 27 | Jul 1 |
| Green Arrow Pea | legume | Apr 13 | Apr 20 | Jun 24 – Jun 29 |
| Hamburg Rooted Parsley | herb | Apr 20 | Apr 27 | Jul 26 – Aug 15 |
| Hard Red Wheat Cover Crop | cover crop | Apr 13 | Apr 20 | Jul 4 – Jul 24 |
| Holland Red Shallots | allium | Apr 6 | Apr 13 | Jul 12 – Aug 11 |
| Honeycrisp apple trees | berry | Apr 27 | Apr 27 | Perennial — see plant page |
| Igloo Cauliflower | brassica | Apr 13 | Apr 27 | Jul 1 – Jul 6 |
| Invicta gooseberry shrubs | berry | Apr 27 | Apr 27 | Perennial — see plant page |
| Little Marvel Pea | legume | Apr 13 | Apr 20 | Jun 19 – Jun 22 |
| Mammoth Dill | herb | Apr 20 | Apr 27 | Jun 11 – Jul 1 |
| Mammoth Melting Sugar Snow Pea | legume | Apr 13 | Apr 20 | Jun 27 – Jul 3 |
| Mary Washington Asparagus | vegetable | Apr 20 | Apr 27 | Perennial — see plant page |
| Medium Red Clover Cover Crop | cover crop | Apr 20 | Apr 27 | Jun 26 – Jul 11 |
| Michihili Cabbage | brassica | Apr 6 | Apr 20 | Jun 29 |
| Millennium Asparagus | vegetable | Apr 20 | Apr 27 | Perennial — see plant page |
| OG American Flag Leeks | allium | Apr 6 | Apr 27 | Jul 26 – Aug 5 |
| Oregon Giant Snow Pea | legume | Apr 13 | Apr 20 | Jun 29 – Jul 3 |
| Oregon Sugar Pod Snow Pea | legume | Apr 13 | Apr 20 | Jun 19 – Jun 27 |
| Progress No. 9 Shelling Pea | legume | Apr 13 | Apr 20 | Jun 17 – Jun 21 |
| Purple Passion Asparagus | vegetable | Apr 20 | Apr 27 | Perennial — see plant page |
| Rapeseed Cover Crop | cover crop | Apr 20 | Apr 27 | Jun 11 – Jul 6 |
| Rapini Broccoli Raab | brassica | Apr 20 | Apr 27 | Jul 1 |
| Red Acre Cabbage | brassica | Apr 6 | Apr 20 | Jul 4 – Jul 9 |
| Red Lake currant shrubs | berry | Apr 27 | Apr 27 | Perennial — see plant page |
| Savoy Perfection Cabbage | brassica | Apr 13 | Apr 27 | Jul 26 – Jul 31 |
| Scarlet Flax Flowers | flower | Apr 20 | Apr 27 | Jun 21 – Jul 6 |
| Shungiku (Edible Chrysanthemum) | lettuce | Apr 20 | Apr 27 | Jun 6 – Jun 21 |
| Snowball Self-Blanche Cauliflower | brassica | Apr 13 | Apr 27 | Jul 1 |
| Sugar Ann Snap Pea | legume | Apr 13 | Apr 20 | Jun 11 – Jun 15 |
| Victoria Rhubarb | vegetable | Apr 6 | Apr 27 | Perennial — see plant page |
| Vienna Purple Kohlrabi | brassica | Apr 13 | Apr 20 | Jun 14 – Jun 24 |
| Vienna White Kohlrabi | brassica | Apr 13 | Apr 20 | Jun 24 |
| Violetta Purple Cauliflower | brassica | Apr 13 | Apr 27 | Jul 1 |
| Wando Pea | legume | Apr 13 | Apr 20 | Jun 22 – Jun 27 |
| Yellow Sweet Blossom Clover Cover Crop | cover crop | Apr 20 | Apr 27 | Jun 26 – Jul 26 |
| African Flake Daisy Flowers | flower | Apr 27 | May 11 | Aug 9 – Aug 19 |
| Aji Amarillo Peppers | pepper | Apr 20 | May 25 | Aug 23 – Sep 22 |
| Aji Dulce Peppers | pepper | Apr 20 | May 25 | Aug 23 – Sep 12 |
| Alexandria Alpine Strawberry | berry | Apr 6 | May 18 | Perennial — see plant page |
| Alfalfa Cover Crop | cover crop | Apr 27 | May 4 | Perennial — see plant page |
| Amish Paste Tomatoes | tomato | Apr 27 | May 25 | Aug 7 – Aug 18 |
| Anaheim Peppers | pepper | Apr 20 | May 25 | Aug 10 – Aug 18 |
| Ancho Grande Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Angelica | herb | Apr 13 | May 11 | Jul 30 – Aug 9 |
| Baby's Breath Flowers | flower | Apr 20 | May 11 | Perennial — see plant page |
| Barletta, Pearly White Onions | root vegetable | Apr 13 | May 11 | Jul 25 – Jul 30 |
| Bhut Jolokia Ghost Pepper | pepper | Apr 20 | May 25 | Aug 23 – Sep 22 |
| Big Jim Hatch Chile | pepper | Apr 20 | May 25 | Aug 3 – Aug 8 |
| Birds Eye Hot Peppers | pepper | Apr 27 | May 25 | Sep 2 – Sep 12 |
| Black Beauty Zucchini | squash | Apr 24 | May 22 | Jul 6 – Jul 16 |
| Black Cherry Tomatoes | tomato | Apr 27 | May 25 | Jul 28 – Aug 8 |
| Butternut Squash | squash | Apr 27 | May 25 | Sep 2 – Sep 22 |
| Cantaloupe | melon | Apr 27 | May 25 | Aug 13 – Aug 23 |
| Caribbean Red Scotch Bonnet Pepper | pepper | Apr 20 | May 25 | Aug 28 – Sep 22 |
| Carolina Reaper peppers | pepper | Apr 13 | May 25 | Aug 23 – Sep 22 |
| Casper Eggplant | vegetable | Apr 27 | May 25 | Aug 3 |
| Catmint | herb | Apr 20 | May 11 | Perennial — see plant page |
| Cayenne Peppers | pepper | Apr 20 | May 25 | Aug 18 – Aug 28 |
| Cherry Bomb peppers | pepper | Apr 13 | May 25 | Aug 8 – Aug 13 |
| Chinese 5-Color Peppers | pepper | Apr 20 | May 25 | Aug 8 – Aug 18 |
| Chocolate Bell Sweet Peppers | pepper | Apr 27 | May 25 | Jul 29 – Aug 13 |
| Chocolate Habanero Hot Peppers | pepper | Apr 27 | May 25 | Aug 18 – Sep 7 |
| Classic Tomatillos | vegetable | Apr 27 | May 18 | Aug 6 – Aug 11 |
| Common Milkweed Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| Common Sage | herb | Apr 20 | May 18 | Perennial — see plant page |
| Corno di Toro Pepper | pepper | Apr 20 | May 25 | Aug 8 – Aug 13 |
| Crackerjack Mix Marigolds | flower | Apr 20 | May 11 | Jul 10 – Jul 25 |
| Crego Mix Aster Flowers | flower | Apr 27 | May 18 | Aug 6 – Aug 16 |
| Crimson Forest Bunching Onions | root vegetable | Apr 20 | May 11 | Jul 10 |
| Curly Parsley | herb | Apr 6 | May 11 | Jul 20 – Jul 30 |
| Dark Opal Basil | herb | Apr 27 | May 25 | Jul 24 – Aug 8 |
| Datil peppers | pepper | Apr 13 | May 25 | Aug 23 – Sep 12 |
| Devils Tongue Yellow Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 12 |
| Dolce Fresca Basil | herb | Apr 27 | May 25 | Jul 24 – Aug 3 |
| Emerald Giant Sweet Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| English Lavender | herb | Apr 20 | May 25 | Perennial — see plant page |
| English Thyme | herb | Apr 13 | May 11 | Perennial — see plant page |
| English White Daisy Flowers | flower | Apr 13 | May 11 | Perennial — see plant page |
| Evergreen Bunching Onions | root vegetable | Apr 20 | May 11 | Sep 8 |
| Fairy Dwarf Mix Candytuft Flowers | flower | Apr 27 | May 4 | Jun 18 – Jul 3 |
| Firecracker Hot Peppers | pepper | Apr 27 | May 25 | Aug 13 – Sep 22 |
| Fish Peppers | pepper | Apr 20 | May 25 | Aug 3 – Aug 13 |
| Flat-Leaf Parsley | herb | Apr 6 | May 11 | Jul 20 – Aug 9 |
| Florida Market Eggplant | vegetable | Apr 27 | May 25 | Aug 13 – Aug 23 |
| Foxglove Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| Fresno Peppers | pepper | Apr 20 | May 25 | Aug 8 – Aug 13 |
| Genovese Basil | herb | Apr 27 | May 25 | Jul 24 – Aug 3 |
| Giant Maximum Mix Snapdragon Flowers | flower | Apr 13 | May 11 | Jul 30 – Aug 14 |
| Gochugaru Korean Peppers | pepper | Apr 20 | May 25 | Aug 8 |
| Golden Celery | vegetable | Apr 13 | May 18 | Aug 11 – Aug 21 |
| Golden Marconi Sweet Peppers | pepper | Apr 27 | May 25 | Jul 29 – Aug 13 |
| Grano Red Onions | root vegetable | Apr 13 | May 11 | Sep 8 |
| Grano White Onions | root vegetable | Apr 13 | May 11 | Sep 8 |
| Green Globe Artichoke | vegetable | Apr 20 | May 25 | Perennial — see plant page |
| Green shiso leaves | herb | Apr 27 | May 18 | Jul 17 – Jul 27 |
| Hatch Green Chile (NM 6-4) Peppers | pepper | Apr 20 | May 25 | Aug 3 – Aug 13 |
| Highbush Blueberries | berry | Apr 27 | May 25 | Perennial — see plant page |
| Holiday Marbles Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 12 |
| Hungarian Hot Wax Pepper | pepper | Apr 20 | May 25 | Jul 29 – Aug 8 |
| Imperial Star Artichoke | vegetable | Apr 6 | May 11 | Aug 9 – Aug 19 |
| Isis Candy Cherry Tomatoes | tomato | Apr 20 | May 18 | Jul 27 – Aug 6 |
| Jalapeño Peppers | pepper | Apr 20 | May 25 | Jul 29 – Aug 8 |
| Kapoor Tulsi (Holy Basil) | herb | Apr 27 | May 25 | Jul 24 |
| Kellogg's Breakfast tomatoes | tomato | Apr 20 | May 18 | Aug 1 – Aug 11 |
| King's Cure-All Evening Primrose Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| Lemon Habanero Hot Peppers | pepper | Apr 27 | May 25 | Aug 18 – Sep 7 |
| Lemongrass | herb | Apr 20 | May 25 | Perennial — see plant page |
| Long Green Louisiana Eggplant | vegetable | Apr 27 | May 25 | Jul 29 – Aug 3 |
| Long Ping Tung Eggplant | vegetable | Apr 27 | May 25 | Jul 19 – Jul 24 |
| Long Purple Italian Eggplant | vegetable | Apr 27 | May 25 | Aug 8 |
| Lunaria Silver Dollar Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| Mariachi Peppers | pepper | Apr 20 | May 25 | Jul 30 – Aug 8 |
| Marketmore 76 Cucumber | cucumber | Apr 27 | May 25 | Jul 22 – Aug 1 |
| Matt's Wild Cherry Tomatoes | tomato | Apr 20 | May 18 | Jul 12 – Jul 22 |
| Midnight Snack Tomatoes | tomato | Apr 27 | May 25 | Jul 29 – Aug 3 |
| Mrs. Burns Lemon Basil | herb | Apr 20 | May 18 | Jul 17 – Jul 27 |
| Mucho Nacho Jalapeño Peppers | pepper | Apr 27 | May 25 | Aug 1 – Aug 3 |
| Napoletano Basil | herb | Apr 27 | May 25 | Aug 8 |
| New England Aster Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| NuMex Twilight Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 22 |
| Orange Habanero Hot Peppers | pepper | Apr 27 | May 25 | Aug 18 – Sep 7 |
| Orange Horizon Sweet Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 13 |
| Orion Florence Fennel | vegetable | Apr 27 | May 18 | Aug 6 – Aug 16 |
| Ox-Eye Daisy Flowers | flower | Apr 13 | May 11 | Perennial — see plant page |
| Pandora Striped Eggplant | vegetable | Apr 27 | May 25 | Aug 8 – Aug 13 |
| Pasilla de Oaxaca Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Paul Robeson tomatoes | tomato | Apr 20 | May 18 | Jul 27 – Aug 11 |
| Pepperoncini Pepper | pepper | Apr 27 | May 25 | Jul 29 – Aug 8 |
| Pesto Perpetuo Basil | herb | Apr 27 | May 25 | Jul 24 – Aug 23 |
| Pimento Sweet Peppers | pepper | Apr 27 | May 25 | Aug 18 – Aug 23 |
| Pineapple Tomatillos | vegetable | Apr 27 | May 18 | Jul 27 – Aug 6 |
| Pistou Basil | herb | Apr 27 | May 25 | Jul 24 |
| Poblano Peppers | pepper | Apr 20 | May 25 | Jul 29 – Aug 8 |
| Powderpuff Aster Flowers | flower | Apr 27 | May 18 | Aug 1 – Aug 11 |
| Pretty Purple Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 22 |
| Purple Basil | herb | Apr 27 | May 25 | Aug 3 – Aug 18 |
| Purple Beauty Sweet Peppers | pepper | Apr 27 | May 25 | Aug 3 – Aug 8 |
| Purple Tiger Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 2 |
| Purple Tomatillos | vegetable | Apr 27 | May 18 | Aug 1 – Aug 11 |
| Red Burgundy Onions | root vegetable | Apr 13 | May 11 | Aug 29 – Sep 8 |
| Red Caribbean Habanero Hot Peppers | pepper | Apr 27 | May 25 | Aug 18 – Sep 7 |
| Red Cayenne Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Red Cherry Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Red Mushroom Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Red Robin Tomatoes | tomato | Apr 27 | May 25 | Jul 19 |
| Red Rubin Basil | herb | Apr 27 | May 25 | Aug 5 |
| Round Mauve Eggplant | vegetable | Apr 27 | May 25 | Aug 13 – Aug 23 |
| Royal Carpet Alyssum Flowers | flower | Apr 27 | May 4 | Jun 18 – Jul 3 |
| Rutgers Tomato | tomato | Apr 27 | May 25 | Aug 3 – Aug 13 |
| Salad Burnet | herb | Apr 27 | May 4 | Perennial — see plant page |
| Santa Fe Grande Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 13 |
| Scarlet Sage Flowers | flower | Apr 27 | May 18 | Perennial — see plant page |
| Serrano Peppers | pepper | Apr 20 | May 25 | Aug 3 – Aug 13 |
| Shasta Daisy Flowers | flower | Apr 6 | May 11 | Perennial — see plant page |
| Single Mix China Aster Flowers | flower | Apr 27 | May 18 | Jul 27 – Aug 6 |
| Smooth Blue Aster Flowers | flower | Apr 27 | May 4 | Perennial — see plant page |
| Soapwort | flower | Apr 27 | May 18 | Perennial — see plant page |
| Southport Red Globe Onions | root vegetable | Apr 13 | May 11 | Sep 8 |
| Southport White Globe Onions | root vegetable | Apr 13 | May 11 | Sep 8 |
| Spanish Sweet White Onions | root vegetable | Apr 13 | May 11 | Aug 29 – Sep 8 |
| Sparky Mix Marigolds | flower | Apr 20 | May 11 | Jul 5 – Jul 20 |
| Spicy Globe Basil | herb | Apr 27 | May 25 | Aug 3 |
| Sugar Baby Watermelon | melon | Apr 27 | May 25 | Aug 8 – Aug 13 |
| Sunbright Yellow Sweet Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 13 |
| Sweet Marjoram | herb | Apr 20 | May 18 | Aug 1 – Aug 16 |
| Sweet Million Tomatoes | tomato | Apr 27 | May 25 | Jul 24 – Jul 29 |
| Sweet Woodruff | herb | Apr 20 | May 11 | Perennial — see plant page |
| Tabasco Hot Peppers | pepper | Apr 27 | May 25 | Aug 13 – Aug 23 |
| Tansy | herb | Apr 20 | May 11 | Perennial — see plant page |
| Tendercrisp Celery | vegetable | Apr 13 | May 18 | Aug 11 – Aug 26 |
| Thai Basil | herb | Apr 27 | May 25 | Jul 24 – Jul 29 |
| Thai Hot Peppers | pepper | Apr 20 | May 25 | Aug 8 – Aug 18 |
| Tiny Tim Tomatoes | tomato | Apr 27 | May 25 | Jul 9 – Jul 19 |
| Trinidad Moruga Scorpion peppers | pepper | Apr 13 | May 25 | Aug 13 – Sep 22 |
| Tropical Milkweed Flowers | flower | Apr 20 | May 18 | Perennial — see plant page |
| Tumbling Tom Red Tomatoes | tomato | Apr 27 | May 25 | Jul 29 – Aug 3 |
| Turkish Orange Eggplant | vegetable | Apr 27 | May 25 | Aug 18 – Aug 23 |
| Verde Tomatillos | vegetable | Apr 27 | May 18 | Aug 1 – Aug 11 |
| White Cloud Sweet Peppers | pepper | Apr 27 | May 25 | Aug 3 – Aug 8 |
| White Lisbon Bunching Onions | root vegetable | Apr 20 | May 11 | Jul 15 |
| Wormwood | herb | Apr 20 | May 11 | Perennial — see plant page |
| Yellow Jalapeno (Caloro) Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Yellow Mushroom Hot Peppers | pepper | Apr 27 | May 25 | Aug 8 – Aug 18 |
| Yellow Scotch Bonnet Hot Peppers | pepper | Apr 27 | May 25 | Aug 23 – Sep 22 |
| Yolo Wonder Sweet Peppers | pepper | Apr 27 | May 25 | Aug 3 – Aug 13 |
| Banana Peppers | pepper | Apr 27 | Jun 1 | Jul 31 – Aug 10 |
| Big Bertha Peppers | pepper | Apr 27 | Jun 1 | Aug 10 – Aug 13 |
| California Wonder Peppers | pepper | Apr 27 | Jun 1 | Aug 12 – Aug 15 |
| Carmen Peppers | pepper | Apr 27 | Jun 1 | Jul 31 – Aug 20 |
| Cubanelle Peppers | pepper | Apr 27 | Jun 1 | Aug 2 – Aug 10 |
| Gypsy Peppers | pepper | Apr 27 | Jun 1 | Jul 31 – Aug 5 |
| Jimmy Nardello Peppers | pepper | Apr 27 | Jun 1 | Aug 20 – Aug 30 |
| King Arthur Peppers | pepper | Apr 27 | Jun 1 | Aug 2 – Aug 8 |
| Lunchbox Mini Peppers | pepper | Apr 27 | Jun 1 | Jul 26 – Jul 31 |
| Padron Peppers | pepper | Apr 27 | Jun 1 | Jul 31 – Aug 5 |
| Shishito Peppers | pepper | Apr 27 | Jun 1 | Jul 31 – Aug 5 |
Plant Outside in April
| Plant | Type | Action | Target Date | Harvest Window |
|---|---|---|---|---|
| Alaska Early Pea | legume | Transplant | Apr 20 | Jun 14 – Jun 19 |
| All Season Cabbage | brassica | Transplant | Apr 27 | Jul 6 – Jul 16 |
| All Year Round Cauliflower | brassica | Transplant | Apr 27 | Jul 1 |
| Berry Blue honeyberry shrubs | berry | Transplant | Apr 27 | Perennial — see plant page |
| Black Salsify | root vegetable | Transplant | Apr 13 | Perennial — see plant page |
| Blue Flax Flowers | flower | Transplant | Apr 27 | Perennial — see plant page |
| Bouquet Dill | herb | Transplant | Apr 27 | Jun 16 – Jul 1 |
| Broad Windsor Fava Bean | legume | Transplant | Apr 20 | Jul 4 – Jul 14 |
| Brunswick Cabbage | brassica | Transplant | Apr 27 | Jul 16 – Jul 26 |
| Calabrese Broccoli | brassica | Transplant | Apr 27 | Jul 1 |
| Carentan Leeks | allium | Transplant | Apr 27 | Jul 26 – Aug 15 |
| Cascadia Sugar Snap Pea | legume | Transplant | Apr 20 | Jun 24 – Jun 26 |
| Charleston Wakefield Cabbage | brassica | Transplant | Apr 20 | Jul 4 |
| Chervil | herb | Transplant | Apr 20 | May 25 – Jun 4 |
| Chinese Forget-Me-Not Flowers | flower | Transplant | Apr 27 | Jul 1 – Jul 21 |
| Copenhagen Cabbage | brassica | Transplant | Apr 27 | Jul 1 |
| Crimson Cherry Rhubarb Root | vegetable | Transplant | Apr 13 | Perennial — see plant page |
| Dandelion | herb | Transplant | Apr 20 | Perennial — see plant page |
| Danish Ballhead Cabbage | brassica | Transplant | Apr 27 | Aug 5 – Aug 15 |
| Delicatesse Blue Kohlrabi | brassica | Transplant | Apr 20 | Jun 14 – Jun 19 |
| Delicatesse White Kohlrabi | brassica | Transplant | Apr 20 | Jun 14 – Jun 19 |
| Di Cicco Broccoli | brassica | Transplant | Apr 27 | Jul 1 |
| Drumhead Cabbage | brassica | Transplant | Apr 27 | Jul 26 – Aug 5 |
| Dukat Dill | herb | Transplant | Apr 27 | Jun 6 – Jun 16 |
| Dutch Yellow Shallots | allium | Transplant | Apr 13 | Jul 12 – Aug 11 |
| Early Jersey Wakefield Cabbage | brassica | Transplant | Apr 20 | Jun 24 – Jul 4 |
| Early Purple Broccoli | brassica | Transplant | Apr 27 | Jul 1 |
| Evergreen Parsley | herb | Transplant | Apr 27 | Jul 6 – Jul 21 |
| Fenugreek | herb | Transplant | Apr 27 | Jun 1 – Jun 16 |
| French Red Shallots | allium | Transplant | Apr 13 | Jul 12 – Aug 11 |
| Giant Imperial Mix Larkspur Flowers | flower | Transplant | Apr 20 | Jul 29 – Aug 18 |
| Giant Musselburgh Leeks | allium | Transplant | Apr 27 | Aug 5 – Aug 10 |
| Glory of Enkhuizen Cabbage | brassica | Transplant | Apr 27 | Jul 26 |
| Golden Acre Cabbage | brassica | Transplant | Apr 27 | Jul 1 |
| Green Arrow Pea | legume | Transplant | Apr 20 | Jun 24 – Jun 29 |
| Hamburg Rooted Parsley | herb | Transplant | Apr 27 | Jul 26 – Aug 15 |
| Hard Red Wheat Cover Crop | cover crop | Transplant | Apr 20 | Jul 4 – Jul 24 |
| Holland Red Shallots | allium | Transplant | Apr 13 | Jul 12 – Aug 11 |
| Honeycrisp apple trees | berry | Transplant | Apr 27 | Perennial — see plant page |
| Igloo Cauliflower | brassica | Transplant | Apr 27 | Jul 1 – Jul 6 |
| Invicta gooseberry shrubs | berry | Transplant | Apr 27 | Perennial — see plant page |
| Little Marvel Pea | legume | Transplant | Apr 20 | Jun 19 – Jun 22 |
| Mammoth Dill | herb | Transplant | Apr 27 | Jun 11 – Jul 1 |
| Mammoth Melting Sugar Snow Pea | legume | Transplant | Apr 20 | Jun 27 – Jul 3 |
| Mary Washington Asparagus | vegetable | Transplant | Apr 27 | Perennial — see plant page |
| Medium Red Clover Cover Crop | cover crop | Transplant | Apr 27 | Jun 26 – Jul 11 |
| Michihili Cabbage | brassica | Transplant | Apr 20 | Jun 29 |
| Millennium Asparagus | vegetable | Transplant | Apr 27 | Perennial — see plant page |
| OG American Flag Leeks | allium | Transplant | Apr 27 | Jul 26 – Aug 5 |
| Oregon Giant Snow Pea | legume | Transplant | Apr 20 | Jun 29 – Jul 3 |
| Oregon Sugar Pod Snow Pea | legume | Transplant | Apr 20 | Jun 19 – Jun 27 |
| Progress No. 9 Shelling Pea | legume | Transplant | Apr 20 | Jun 17 – Jun 21 |
| Purple Passion Asparagus | vegetable | Transplant | Apr 27 | Perennial — see plant page |
| Rapeseed Cover Crop | cover crop | Transplant | Apr 27 | Jun 11 – Jul 6 |
| Rapini Broccoli Raab | brassica | Transplant | Apr 27 | Jul 1 |
| Red Acre Cabbage | brassica | Transplant | Apr 20 | Jul 4 – Jul 9 |
| Red Lake currant shrubs | berry | Transplant | Apr 27 | Perennial — see plant page |
| Savoy Perfection Cabbage | brassica | Transplant | Apr 27 | Jul 26 – Jul 31 |
| Scarlet Flax Flowers | flower | Transplant | Apr 27 | Jun 21 – Jul 6 |
| Shungiku (Edible Chrysanthemum) | lettuce | Transplant | Apr 27 | Jun 6 – Jun 21 |
| Snowball Self-Blanche Cauliflower | brassica | Transplant | Apr 27 | Jul 1 |
| Sugar Ann Snap Pea | legume | Transplant | Apr 20 | Jun 11 – Jun 15 |
| Victoria Rhubarb | vegetable | Transplant | Apr 27 | Perennial — see plant page |
| Vienna Purple Kohlrabi | brassica | Transplant | Apr 20 | Jun 14 – Jun 24 |
| Vienna White Kohlrabi | brassica | Transplant | Apr 20 | Jun 24 |
| Viola and pansy edible flowers | flower | Transplant | Apr 27 | Jun 26 – Jul 6 |
| Violetta Purple Cauliflower | brassica | Transplant | Apr 27 | Jul 1 |
| Wando Pea | legume | Transplant | Apr 20 | Jun 22 – Jun 27 |
| Yellow Sweet Blossom Clover Cover Crop | cover crop | Transplant | Apr 27 | Jun 26 – Jul 26 |
Harvest in April
Nothing to harvest in April for Zone 4B.
Next window: May
— 4 varieties, including Astro Arugula, Chervil, Mesclun Mix.
Key Tasks for April in Zone 4B
- 1 Start 229 varieties indoors this month under grow lights or in a sunny south-facing window. Use a seed-starting mix and bottom heat (70–75°F) for best germination rates.
- 2 Harden off transplants before moving outdoors — set them outside in a sheltered spot for increasing hours over 7–10 days before planting in the ground.
- 3 Check soil moisture before watering — stick a finger 2 inches into the soil. Water only when the soil is dry at that depth. Consistent moisture is more important than frequency.
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