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Zone 6A — April

What to Plant in April in Zone 6A

April in Zone 6A: 48 crops to start indoors, 310 to plant or direct sow outside, and 3 entering harvest window. Last frost averages April 29. Reference city: Omaha, NE.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
48 Start Indoors
310 Plant Outside
3 Harvest
Frost window: Active

This is when frost can still happen in Zone 6A. The last spring frost typically lands on April 29, with a 10% chance of frost as late as May 15. Plan transplants with this window in mind.

See full Zone 6A frost outlook

Start Indoors in April

Plant Type Start Indoors Transplant Outside Harvest Window
Basil Herb Mix herb Apr 1 May 6 Jul 5 – Jul 25
Bitter melons vegetable Apr 15 May 13 Jul 27 – Aug 11
Black Beauty Zucchini squash Apr 12 May 10 Jun 24 – Jul 4
Broccolini brassica Apr 8 May 13 Jul 2 – Jul 12
Brussels Sprouts brassica Apr 8 May 13 Aug 6 – Aug 31
Cinnamon Basil herb Apr 1 May 6 Jul 10 – Jul 25
Classic Tomatillos vegetable Apr 1 May 6 Jul 25 – Jul 30
Clemson Spineless Okra vegetable Apr 8 May 13 Jul 7 – Jul 16
Cosmos flower Apr 8 May 13 Jul 22 – Aug 11
Crimson Sweet Watermelon melon Apr 15 May 13 Aug 1 – Aug 11
Delica Kabocha Squash squash Apr 15 May 13 Aug 16 – Aug 31
Delicata Squash squash Apr 15 May 13 Aug 1 – Aug 21
Early White Bush Scallop Pattypan Squash squash Apr 15 May 13 Jun 29 – Jul 7
French Marigold flower Apr 8 May 13 Jul 2 – Jul 12
German Chamomile herb Apr 8 May 13 Jul 12 – Jul 17
Greek Basil herb Apr 1 May 6 Jul 10 – Jul 20
Green Cabbage brassica Apr 8 May 13 Jul 12 – Aug 21
Green shiso leaves herb Apr 1 May 6 Jul 5 – Jul 15
Hale's Best Jumbo Cantaloupe melon Apr 15 May 13 Aug 1 – Aug 11
Honeydew Melon melon Apr 15 May 13 Aug 21 – Sep 5
Italian Large Leaf Basil herb Apr 1 May 6 Jul 5 – Jul 20
Jack O'Lantern Pumpkin squash Apr 15 May 13 Aug 11 – Aug 31
Lemon Cucumber cucumber Apr 22 May 13 Jul 12 – Jul 22
Lettuce Leaf Basil herb Apr 1 May 6 Jul 10 – Jul 25
Licorice Basil herb Apr 1 May 6 Jul 10 – Jul 25
Lime Basil herb Apr 1 May 6 Jul 10 – Jul 20
Luffa gourds vegetable Apr 8 May 13 Aug 21 – Sep 10
Marketmore 76 Cucumber cucumber Apr 15 May 13 Jul 10 – Jul 20
National Pickling Cucumber cucumber Apr 22 May 13 Jul 2 – Jul 10
Orion Florence Fennel vegetable Apr 1 May 6 Jul 25
Purple Tomatillos vegetable Apr 1 May 6 Jul 20 – Jul 30
Red Cabbage brassica Apr 8 May 13 Jul 12 – Aug 21
Red Velvet Leaf Basil herb Apr 1 May 6 Jul 10 – Jul 25
Romanesco brassica Apr 8 May 13 Jul 27 – Aug 21
Roselle calyces and leaves vegetable Apr 1 May 6 Oct 3 – Oct 8 (before frost)
Scarlet Sage Flowers flower Apr 1 May 6 Perennial — see plant page
Snow Crown Cauliflower brassica Apr 8 May 13 Jul 2 – Jul 12
Spaghetti Squash squash Apr 15 May 13 Aug 9 – Aug 21
Sugar Baby Watermelon melon Apr 15 May 13 Jul 27 – Aug 1
Sugar Pie Pumpkin squash Apr 15 May 13 Aug 11 – Aug 31
Table Queen Acorn Squash squash Apr 15 May 13 Aug 1 – Aug 21
Tomatillo vegetable Apr 8 May 13 Jul 12 – Aug 6
Tri-X 313 Seedless Watermelon melon Apr 8 May 13 Jul 17 – Jul 27
Verde Tomatillos vegetable Apr 1 May 6 Jul 20 – Jul 30
Waltham 29 Broccoli brassica Apr 8 May 13 Jul 27 – Aug 11
Waltham Butternut Squash squash Apr 15 May 13 Aug 21 – Sep 10
Yellow Crookneck Squash squash Apr 15 May 13 Jul 2 – Jul 12
Zinnia flower Apr 8 May 13 Jul 12 – Aug 11

Plant Outside in April

Plant Type Action Target Date Harvest Window
AC Wendy Strawberry berry Plant Out Apr 15 Perennial — see plant page
Adams Elderberry berry Plant Out Apr 29 Perennial — see plant page
African Flake Daisy Flowers flower Direct Sow Apr 29 Jul 28 – Aug 7
Alaska Mix Nasturtium Flowers flower Direct Sow Apr 29 Jun 23 – Jul 3
Albion Strawberry berry Plant Out Apr 15 Perennial — see plant page
Alfalfa Cover Crop cover crop Direct Sow Apr 22 Perennial — see plant page
All Season Cabbage brassica Transplant Apr 15 Jun 24 – Jul 4
All Year Round Cauliflower brassica Transplant Apr 15 Jun 19
All Year Round Lettuce lettuce Direct Sow Apr 2 Jun 5 – Jun 14
Allstar Strawberry berry Plant Out Apr 15 Perennial — see plant page
America Spinach lettuce Direct Sow Apr 2 May 15 – May 27
Angelica herb Transplant Apr 29 Jul 18 – Jul 28
Anise hyssop leaves and flowers flower Direct Sow Apr 29 Perennial — see plant page
Arroyo Lupine Flowers flower Direct Sow Apr 29 Jul 23 – Aug 12
Astro Arugula lettuce Direct Sow Apr 2 Apr 23 – May 12
Baby Blue Eyes Flowers flower Direct Sow Apr 29 Jun 28 – Jul 28
Baby's Breath Flowers flower Direct Sow Apr 29 Jun 13 – Jun 28
Bachelor's button edible flowers flower Direct Sow Apr 29 Jun 28 – Jul 18
Barletta, Pearly White Onions allium Transplant Apr 29 Jul 13 – Jul 18
Bee Balm flower Plant Out Apr 29 Perennial — see plant page
Berry Blue honeyberry shrubs berry Plant Out Apr 15 Perennial — see plant page
Black Oil Sunflower Microgreens microgreen Plant Out Apr 29 May 6 – May 11
Black Seeded Simpson Lettuce lettuce Direct Sow Apr 2 May 17 – May 18
Black-Eyed Susan flower Plant Out Apr 29 Perennial — see plant page
Blazing Star Flowers flower Direct Sow Apr 29 Perennial — see plant page
Blonde de Paris Lettuce lettuce Direct Sow Apr 2 May 22 – Jun 1
Bloomsdale Longstanding Spinach lettuce Direct Sow Apr 2 May 17 – May 24
Blue Curled Scotch Kale lettuce Direct Sow Apr 2 May 27 – Jun 1
Blue Flax Flowers flower Direct Sow Apr 15 Perennial — see plant page
Bluecrop Blueberry berry Plant Out Apr 15 Perennial — see plant page
Bluegold Blueberry berry Plant Out Apr 15 Perennial — see plant page
Blueray Blueberry berry Plant Out Apr 15 Perennial — see plant page
Bok Choy lettuce Direct Sow Apr 2 May 17 – Jun 1
Borage flower Direct Sow Apr 29 Jun 23 – Jul 13
Bouquet Dill herb Direct Sow Apr 15 Jun 4 – Jun 19
Brilliant Celeriac root vegetable Transplant Apr 29 Aug 17 – Aug 27
Broadleaf Classic Endive lettuce Direct Sow Apr 2 May 22 – Jun 1
Broadleaf Full Heart Batavian Endive lettuce Direct Sow Apr 2 Jun 26 – Jul 1
Broadleaf Sorrel lettuce Direct Sow Apr 2 Perennial — see plant page
Brunswick Cabbage brassica Transplant Apr 15 Jul 14
Brunswick Lowbush Blueberry berry Plant Out Apr 29 Perennial — see plant page
Buckwheat cover crop Direct Sow Apr 29 May 29 – Jun 13
Burgundy Boston Lettuce lettuce Direct Sow Apr 2 May 22 – May 27
Buttercrunch Lettuce lettuce Direct Sow Apr 2 May 18 – May 27
Butterhead Lettuce lettuce Direct Sow Apr 2 May 22 – Jun 6
Calabrese Broccoli brassica Transplant Apr 15 Jun 19
California Bluebell flower Direct Sow Apr 29 Jun 23 – Jul 3
Calypso Cilantro herb Direct Sow Apr 29 Jun 18 – Jun 23
Camarosa Strawberry berry Plant Out Apr 15 Perennial — see plant page
Canary Yellow Swiss Chard lettuce Direct Sow Apr 2 May 22 – Jun 1
Caraway herb Direct Sow Apr 8 Perennial — see plant page
Carentan Leeks allium Transplant Apr 15 Jul 14 – Aug 3
Catalogna Chicory lettuce Direct Sow Apr 2 May 27
Catmint herb Transplant Apr 29 Perennial — see plant page
Catnip Herb herb Direct Sow Apr 29 Perennial — see plant page
Celeste Fig berry Plant Out Apr 29 Perennial — see plant page
Chandler Blueberry berry Plant Out Apr 15 Perennial — see plant page
Chandler Strawberry berry Plant Out Apr 15 Perennial — see plant page
Charleston Wakefield Cabbage brassica Transplant Apr 8 Jun 17
Chervil herb Direct Sow Apr 8 May 13 – May 23
Chicago Hardy Fig berry Plant Out Apr 29 Perennial — see plant page
Chickasaw Blackberry berry Plant Out Apr 29 Perennial — see plant page
Chinese Broccoli (Gai Lan) brassica Direct Sow Apr 2 May 22 – Jun 11
Chinese Forget-Me-Not Flowers flower Direct Sow Apr 15 Jun 19 – Jul 9
Chives herb Plant Out Apr 29 Perennial — see plant page
Common Milkweed Flowers flower Direct Sow Apr 22 Perennial — see plant page
Concord grape vines berry Plant Out Apr 15 Perennial — see plant page
Copenhagen Cabbage brassica Transplant Apr 15 Jun 19
Cosmos Sensations Mix Flowers flower Direct Sow Apr 29 Jul 13 – Jul 28
Crackerjack Mix Marigolds flower Transplant Apr 29 Jun 28 – Jul 13
Crimson Cherry Rhubarb Root vegetable Plant Out Apr 1 Perennial — see plant page
Crimson Clover cover crop Direct Sow Apr 29 Jun 28 – Jul 28
Crimson Forest Bunching Onions allium Transplant Apr 29 Jun 28
Crisphead Lettuce lettuce Direct Sow Apr 2 Jun 9 – Jun 16
Curly Kale lettuce Direct Sow Apr 2 May 27 – Jun 6
Curly Parsley herb Transplant Apr 29 Jul 8 – Jul 18
Dandelion herb Direct Sow Apr 8 Perennial — see plant page
Danish Ballhead Cabbage brassica Transplant Apr 15 Jul 24 – Aug 3
Dark Green Italian Giant Parsley herb Direct Sow Apr 15 Jun 14 – Jun 29
Dark Green Romaine Lettuce lettuce Direct Sow Apr 2 Jun 1 – Jun 11
Delicatesse Blue Kohlrabi brassica Direct Sow Apr 2 May 27 – Jun 1
Delicatesse White Kohlrabi brassica Direct Sow Apr 2 May 27 – Jun 1
Di Cicco Broccoli brassica Transplant Apr 15 May 30 – Jun 2
Dill herb Direct Sow Apr 29 Jun 8 – Jun 23
Drumhead Cabbage brassica Transplant Apr 15 Jul 14 – Jul 24
Dukat Dill herb Direct Sow Apr 15 May 25 – Jun 4
Duke Blueberry berry Plant Out Apr 15 Perennial — see plant page
Dutch Lamb's Lettuce lettuce Direct Sow Apr 2 May 12 – May 22
Dutch Yellow Shallots allium Plant Out Apr 1 Jun 30 – Jul 30
Dwarf Jewel Mix Nasturtium Flowers flower Direct Sow Apr 29 Jun 18 – Jun 28
Dwarf Siberian Kale lettuce Direct Sow Apr 2 May 22 – May 27
Earliglow Strawberry berry Plant Out Apr 15 Perennial — see plant page
Early Jersey Wakefield Cabbage brassica Transplant Apr 8 Jun 12 – Jun 22
Early Purple Broccoli brassica Transplant Apr 15 Jun 19
Echinacea flower Plant Out Apr 29 Perennial — see plant page
Elliott Blueberry berry Plant Out Apr 15 Perennial — see plant page
Empress of India Nasturtium Flowers flower Direct Sow Apr 29 Jun 23 – Jul 3
Endive / Escarole lettuce Direct Sow Apr 2 May 17 – Jun 6
English Lavender (companion planting) flower Plant Out Apr 29 Perennial — see plant page
English Thyme herb Transplant Apr 29 Perennial — see plant page
English White Daisy Flowers flower Transplant Apr 29 Perennial — see plant page
Evergreen Bunching Onions allium Transplant Apr 29 Jun 28 – Jul 3
Evergreen Parsley herb Direct Sow Apr 15 Jun 24 – Jul 9
Fairy Dwarf Mix Candytuft Flowers flower Direct Sow Apr 22 Jun 6 – Jun 16
Fenugreek herb Direct Sow Apr 15 May 20 – Jun 4
Flat-Leaf Parsley herb Transplant Apr 29 Jul 8 – Jul 28
Florida Broadleaf Mustard lettuce Direct Sow Apr 2 May 12 – May 22
Fordhook Giant Swiss Chard lettuce Direct Sow Apr 2 May 17 – May 27
Fort Laramie Strawberry berry Plant Out Apr 15 Perennial — see plant page
Foxglove Flowers flower Direct Sow Apr 22 Perennial — see plant page
French Lamb's Lettuce lettuce Direct Sow Apr 2 May 12 – May 22
French Red Shallots allium Plant Out Apr 1 Jun 30 – Jul 30
French Tarragon herb Plant Out Apr 29 Perennial — see plant page
Gaillardia Annual Mix Flowers flower Direct Sow Apr 29 Jul 8 – Jul 28
Garlic Chives herb Plant Out Apr 29 Perennial — see plant page
Georgia Southern Collard Greens lettuce Direct Sow Apr 2 Jun 11 – Jun 26
Giant Imperial Mix Larkspur Flowers flower Direct Sow Apr 8 Jul 17 – Aug 6
Giant Maximum Mix Snapdragon Flowers flower Transplant Apr 29 Jul 18 – Aug 2
Giant Musselburgh Leeks allium Transplant Apr 15 Jul 29
Giant Red Mustard lettuce Direct Sow Apr 2 May 17
Globe Gilia Flowers flower Direct Sow Apr 29 Jun 28 – Jul 18
Glorious Gleam Nasturtium Flowers flower Direct Sow Apr 29 Jun 23 – Jul 8
Glory of Enkhuizen Cabbage brassica Transplant Apr 15 Jul 14
Golden Acre Cabbage brassica Transplant Apr 15 Jun 19
Grano Red Onions allium Transplant Apr 29 Aug 27
Grano White Onions allium Transplant Apr 29 Aug 27
Green Ice Lettuce lettuce Direct Sow Apr 2 May 17
Green Mountain Celtuce lettuce Direct Sow Apr 2 May 22
Green Wave Mustard lettuce Direct Sow Apr 2 May 17
Hairy vetch cover crop stands cover crop Direct Sow Apr 29 Jun 28 – Jul 28
Hamburg Rooted Parsley herb Direct Sow Apr 15 Jul 14 – Aug 3
Hard Red Wheat Cover Crop cover crop Direct Sow Apr 8 Jun 22 – Jul 12
Herb Fennel herb Direct Sow Apr 29 Perennial — see plant page
Heritage Raspberry berry Plant Out Apr 15 Perennial — see plant page
Holland Red Shallots allium Plant Out Apr 1 Jun 30 – Jul 30
Honeoye Strawberry berry Plant Out Apr 15 Perennial — see plant page
Honeycrisp apple trees berry Plant Out Apr 15 Perennial — see plant page
Horehound Herb herb Direct Sow Apr 29 Perennial — see plant page
Horseradish vegetable Plant Out Apr 29 Perennial — see plant page
Hot Pink Swiss Chard lettuce Direct Sow Apr 2 May 22 – Jun 1
Iceberg Lettuce lettuce Direct Sow Apr 2 Jun 9 – Jun 16
Igloo Cauliflower brassica Transplant Apr 15 Jun 19 – Jun 24
Imperial Star Artichoke vegetable Transplant Apr 29 Jul 28 – Aug 7
Indian Spring Mix Hollyhock Flowers flower Direct Sow Apr 29 Aug 27 – Oct 8 (before frost)
Invicta gooseberry shrubs berry Plant Out Apr 15 Perennial — see plant page
Issai hardy kiwi vines berry Plant Out Apr 15 Perennial — see plant page
Italian Oregano herb Transplant Apr 29 Perennial — see plant page
Jersey Blueberry berry Plant Out Apr 15 Perennial — see plant page
Jersey Knight Asparagus vegetable Plant Out Apr 15 Perennial — see plant page
Jewel Black Raspberry berry Plant Out Apr 29 Perennial — see plant page
Jewel Strawberries berry Plant Out Apr 15 Perennial — see plant page
Kagraner Sommer Lettuce lettuce Direct Sow Apr 2 May 30
King Richard Leek allium Transplant Apr 1 Jun 15
King's Cure-All Evening Primrose Flowers flower Direct Sow Apr 22 Perennial — see plant page
Lacinato Kale lettuce Direct Sow Apr 2 Jun 1 – Jun 6
Lacy Phacelia Flowers flower Direct Sow Apr 29 Jun 13 – Jun 28
Lanceleaf Coreopsis Flowers flower Direct Sow Apr 29 Perennial — see plant page
Large Leaf Sorrel lettuce Direct Sow Apr 2 Perennial — see plant page
Leaf Lettuce Mix lettuce Direct Sow Apr 2 May 17 – May 27
Leek allium Transplant Apr 1 Jul 10 – Aug 9
Legacy Blueberry berry Plant Out Apr 15 Perennial — see plant page
Lemon Balm herb Plant Out Apr 29 Perennial — see plant page
Lemon Mint Herb herb Direct Sow Apr 29 Jul 28
Little Gem Lettuce lettuce Direct Sow Apr 2 May 22 – May 28
Lollo Bionda Lettuce lettuce Direct Sow Apr 2 May 22 – Jun 1
Lollo Rossa Lettuce lettuce Direct Sow Apr 2 May 25 – May 28
Lovage Herb herb Direct Sow Apr 29 Perennial — see plant page
Love-in-a-Mist Flowers flower Direct Sow Apr 29 Jul 3 – Jul 8
Lunaria Silver Dollar Flowers flower Direct Sow Apr 22 Perennial — see plant page
Magenta Sunset Swiss Chard lettuce Direct Sow Apr 2 May 27 – Jun 1
Mammoth Dill herb Direct Sow Apr 15 May 30 – Jun 19
Mammoth Sunflower flower Direct Sow Apr 29 Jul 18 – Aug 7
Mara des Bois Strawberry berry Plant Out Apr 15 Perennial — see plant page
Marion Blackberry berry Plant Out Apr 29 Perennial — see plant page
Marvel of Four Seasons Lettuce lettuce Direct Sow Apr 2 May 17 – Jun 1
Mary Washington Asparagus vegetable Plant Out Apr 15 Perennial — see plant page
Matador Viking Spinach lettuce Direct Sow Apr 2 May 17 – May 20
Maximilian Sunflowers flower Direct Sow Apr 29 Perennial — see plant page
McKana Giants Mix Columbine Flowers flower Direct Sow Apr 29 Perennial — see plant page
Medium Red Clover Cover Crop cover crop Direct Sow Apr 15 Jun 14 – Jun 29
Mesclun Mix lettuce Direct Sow Apr 2 Apr 23 – May 2
Michihili Cabbage brassica Transplant Apr 8 Jun 17
Millennium Asparagus vegetable Plant Out Apr 15 Perennial — see plant page
Misty Blueberry berry Plant Out Apr 15 Perennial — see plant page
Mizuna lettuce Direct Sow Apr 2 May 12 – May 22
Monstrueux de Viroflay Spinach lettuce Direct Sow Apr 2 May 17 – May 22
Morris Heading Collard lettuce Direct Sow Apr 2 Jun 16 – Jun 21
Mugwort herb Direct Sow Apr 29 Perennial — see plant page
Mustard Greens lettuce Direct Sow Apr 2 May 7 – May 22
Mâche (Corn Salad) lettuce Direct Sow Apr 2 Jun 1 – Jun 25
Napa Cabbage brassica Direct Sow Apr 2 Jun 1 – Jun 11
Nasturtium flower Direct Sow Apr 29 Jun 18 – Jul 3
New England Aster Flowers flower Direct Sow Apr 22 Perennial — see plant page
New Zealand Spinach lettuce Direct Sow Apr 2 May 22 – Jun 1
Noble Giant Spinach lettuce Direct Sow Apr 2 May 18 – May 22
Nodding Catchfly Flowers flower Direct Sow Apr 29 Jun 28 – Jul 28
Northblue Blueberry berry Plant Out Apr 15 Perennial — see plant page
Northland Blueberry berry Plant Out Apr 15 Perennial — see plant page
O'Neal Blueberry berry Plant Out Apr 15 Perennial — see plant page
OG American Flag Leeks allium Transplant Apr 15 Jul 14 – Jul 24
Old Fashion Mustard lettuce Direct Sow Apr 2 May 17 – May 22
Orange Sulphur Cosmos Flowers flower Direct Sow Apr 29 Jun 23 – Jul 8
Orange Swiss Chard lettuce Direct Sow Apr 2 May 17 – May 27
Ox-Eye Daisy Flowers flower Transplant Apr 29 Perennial — see plant page
Ozark Beauty Strawberry berry Plant Out Apr 15 Perennial — see plant page
Painted Mountain Flour Corn vegetable Direct Sow Apr 29 Jul 23
Par-Cel Cutting Celery vegetable Plant Out Apr 29 Jul 18 – Jul 23
Patriot Blueberry berry Plant Out Apr 15 Perennial — see plant page
Peach Melba Nasturtium Flowers flower Direct Sow Apr 29 Jun 18 – Jun 28
Peppermint herb Plant Out Apr 29 Perennial — see plant page
Petch Siam Thai Eggplant vegetable Plant Out Apr 29 Jun 30
Phacelia cover crop and bee forage cover crop Direct Sow Apr 29 Jun 13 – Jun 28
Pink Lemonade Blueberry berry Plant Out Apr 15 Perennial — see plant page
Pixie Delight Lupine Flowers flower Direct Sow Apr 29 Jul 28 – Aug 17
Plains Coreopsis flower Direct Sow Apr 29 Jun 28 – Jul 8
Popcorn vegetable Direct Sow Apr 29 Jul 23 – Aug 27
Potato onion clusters allium Plant Out Apr 29 Jul 28 – Aug 27
Premier Kale lettuce Direct Sow Apr 2 May 22 – Jun 1
Purple Passion Asparagus vegetable Plant Out Apr 15 Perennial — see plant page
Pápalo leaves herb Direct Sow Apr 29 Jul 8 – Jul 18
Queen Anne's Lace Flowers flower Direct Sow Apr 29 Jul 3 – Jul 13
Quinault Strawberry berry Plant Out Apr 15 Perennial — see plant page
Radicchio lettuce Direct Sow Apr 2 Jun 1 – Jun 26
Rainbow Mix Swiss Chard lettuce Direct Sow Apr 2 May 22 – Jun 1
Rambo Radish Microgreens microgreen Plant Out Apr 29 May 9 – May 14
Rapeseed Cover Crop cover crop Direct Sow Apr 15 May 30 – Jun 24
Rapini Broccoli Raab brassica Direct Sow Apr 2 Jun 6
Raspberry Shortcake berry Plant Out Apr 15 Perennial — see plant page
Red Acre Cabbage brassica Transplant Apr 8 Jun 22 – Jun 27
Red Burgundy Onions allium Transplant Apr 29 Aug 17 – Aug 27
Red Currant Tomato tomato Plant Out Apr 29 Jul 8 – Jul 18
Red Lake currant shrubs berry Plant Out Apr 15 Perennial — see plant page
Red Leaf Lettuce lettuce Direct Sow Apr 2 May 17 – May 27
Red Orach lettuce Direct Sow Apr 2 May 17
Red Romaine Lettuce lettuce Direct Sow Apr 2 Jun 1 – Jun 11
Red Russian Kale lettuce Direct Sow Apr 2 May 12 – May 22
Red Vein Sorrel lettuce Direct Sow Apr 2 Perennial — see plant page
Red-Stem Malabar Spinach lettuce Direct Sow Apr 2 May 27 – Jun 11
Rhubarb vegetable Plant Out Apr 29 Perennial — see plant page
Romaine Lettuce lettuce Direct Sow Apr 2 Jun 6 – Jun 16
Roman Chamomile herb Transplant Apr 29 Perennial — see plant page
Royal Carpet Alyssum Flowers flower Direct Sow Apr 22 Jun 6 – Jun 21
Royalty Purple Raspberry berry Plant Out Apr 29 Perennial — see plant page
Ruby Red Swiss Chard lettuce Direct Sow Apr 2 May 27 – Jun 1
Rue herb Transplant Apr 29 Perennial — see plant page
Russell Mix Lupine Flowers flower Direct Sow Apr 29 Perennial — see plant page
Russian Tarragon herb Direct Sow Apr 29 Perennial — see plant page
Salad Bowl Green Lettuce lettuce Direct Sow Apr 2 May 21 – May 22
Salad Burnet herb Direct Sow Apr 22 Perennial — see plant page
San Andreas Strawberries berry Plant Out Apr 15 Perennial — see plant page
Savoy Perfection Cabbage brassica Transplant Apr 15 Jul 14 – Jul 19
Scarlet Flax Flowers flower Direct Sow Apr 15 Jun 9 – Jun 24
Seascape Strawberry berry Plant Out Apr 15 Perennial — see plant page
Shallot allium Plant Out Apr 8 Jul 7 – Aug 6
Shasta Daisy Flowers flower Transplant Apr 29 Perennial — see plant page
Showy Pink Ladies Evening Primrose Flowers flower Direct Sow Apr 29 Perennial — see plant page
Shungiku (Edible Chrysanthemum) lettuce Direct Sow Apr 2 May 12 – May 27
Signet marigold edible flowers flower Direct Sow Apr 29 Jun 28 – Jul 3
Silver Queen Sweet Corn vegetable Direct Sow Apr 29 Jul 28 – Jul 30
Slow-Bolt (Slo-Bolt) Cilantro/Coriander herb Direct Sow Apr 29 May 27 – Jun 8
Smooth Blue Aster Flowers flower Direct Sow Apr 22 Perennial — see plant page
Snowball Self-Blanche Cauliflower brassica Transplant Apr 15 Jun 19
Southport Red Globe Onions allium Transplant Apr 29 Aug 27
Southport White Globe Onions allium Transplant Apr 29 Aug 27
Spanish Sweet White Onions allium Transplant Apr 29 Aug 17 – Aug 27
Sparkle Strawberry berry Plant Out Apr 15 Perennial — see plant page
Sparky Mix Marigolds flower Transplant Apr 29 Jun 23 – Jul 8
Spearmint herb Plant Out Apr 29 Perennial — see plant page
Speckled Pea Shoot Microgreens microgreen Plant Out Apr 29 May 7 – May 13
Summer Bibb Lettuce lettuce Direct Sow Apr 2 May 27 – Jun 1
Summer Carnival Mix Hollyhock Flowers flower Direct Sow Apr 29 Aug 27 – Oct 8 (before frost)
Surecrop Strawberry berry Plant Out Apr 15 Perennial — see plant page
Sweet Woodruff herb Transplant Apr 29 Perennial — see plant page
Swiss Chard lettuce Direct Sow Apr 2 May 22 – Jun 1
Tall Trailing Mix Nasturtium Flowers flower Direct Sow Apr 29 Jun 23 – Jul 8
Tango Lettuce lettuce Direct Sow Apr 2 May 18
Tansy herb Transplant Apr 29 Perennial — see plant page
Tatsoi lettuce Direct Sow Apr 2 Apr 27 – May 17
Tendergreen Mustard lettuce Direct Sow Apr 2 May 12 – May 22
Texas Bluebonnet Lupine Flowers flower Direct Sow Apr 29 Jul 13 – Aug 2
Tom Thumb Lettuce lettuce Direct Sow Apr 2 May 22 – Jun 11
Top Hat Blueberry berry Plant Out Apr 15 Perennial — see plant page
Toro Blueberry berry Plant Out Apr 15 Perennial — see plant page
Triple Crown Blackberry berry Plant Out Apr 29 Perennial — see plant page
Tristar Strawberry berry Plant Out Apr 15 Perennial — see plant page
True Watercress vegetable Direct Sow Apr 29 Perennial — see plant page
Très Fine Maraîchère Frisée lettuce Direct Sow Apr 2 Jun 1
Tuscany Black Kale lettuce Direct Sow Apr 2 Jun 1 – Jun 16
Upland Cress vegetable Direct Sow Apr 29 Perennial — see plant page
Vates Collard lettuce Direct Sow Apr 2 Jun 1 – Jun 16
Vates Kale lettuce Direct Sow Apr 2 May 22 – May 27
Verona Red Chicory lettuce Direct Sow Apr 2 Jun 26 – Jul 3
Victoria Rhubarb vegetable Transplant Apr 15 Perennial — see plant page
Vienna Purple Kohlrabi brassica Direct Sow Apr 2 May 27 – Jun 6
Vienna White Kohlrabi brassica Direct Sow Apr 2 May 27
Viola and pansy edible flowers flower Transplant Apr 15 Jun 14 – Jun 24
Violetta Purple Cauliflower brassica Transplant Apr 15 Jun 19
Whirlybird Nasturtium Flowers flower Direct Sow Apr 29 Jun 18 – Jun 28
White Boston Lettuce lettuce Direct Sow Apr 2 May 12 – May 22
White clover living mulch cover crop Direct Sow Apr 29 Perennial — see plant page
White Lisbon Bunching Onions allium Transplant Apr 29 Jun 28
Winner Kohlrabi brassica Direct Sow Apr 2 May 17 – May 22
Winter Density Lettuce lettuce Direct Sow Apr 2 May 26 – Jun 1
Winter Giant Spinach lettuce Direct Sow Apr 2 May 17 – May 22
Winter rye cover crop stands cover crop Direct Sow Apr 29 Oct 26 – Dec 5
Witloof White Chicory lettuce Direct Sow Apr 2 Jul 21 – Aug 10
Wormwood herb Transplant Apr 29 Perennial — see plant page
Yarrow flower Plant Out Apr 29 Perennial — see plant page
Yellow Sulphur Cosmos Flowers flower Direct Sow Apr 29 Jun 23 – Jul 8
Yellow Sweet Blossom Clover Cover Crop cover crop Direct Sow Apr 15 Jun 14 – Jul 14

Harvest in April

Plant Type Planted / Sown Harvest Window
Astro Arugula lettuce Apr 2 Apr 23 – May 12
Mesclun Mix lettuce Apr 2 Apr 23 – May 2
Tatsoi lettuce Apr 2 Apr 27 – May 17

Key Tasks for April in Zone 6A

  1. 1 Start 48 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. 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. 3 Direct sow seeds at the recommended depth and spacing. Keep the seedbed consistently moist until germination is complete.
  4. 4 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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