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Zone 9A — May

What to Plant in May in Zone 9A

May in Zone 9A: 0 crops to start indoors, 0 to plant or direct sow outside, and 300 entering harvest window. Last frost averages March 4. Reference city: Phoenix, AZ.
Updated May 13, 2026 · Frost data from NOAA 1991-2020 Climate Normals
0 Start Indoors
0 Plant Outside
300 Harvest
Frost risk: Cleared

Frost season has cleared in Zone 9A. The last spring frost typically passed by March 4, and the very latest 10% chance closed by March 27. Tender crops are safe to plant out.

See full Zone 9A frost outlook →

Start Indoors in May

Nothing to start seeds indoors in May for Zone 9A.
Next window: December — 1 variety, including Texas 1015Y SuperSweet Onion.

Plant Outside in May

Nothing to plant or sow outside in May for Zone 9A.
Next window: September — 2 varieties, including Nantes Carrot (fall planting), Sugar Snap Pea (fall planting).

Harvest in May

Plant Type Planted / Sown Harvest Window
Witloof White lettuce Jan 23 May 9 – Jun 1
African Flake Daisy Flowers flower Feb 18 May 19 – May 29
Brunswick Cabbage brassica Feb 18 May 9 – May 19
Carentan Leeks allium Feb 18 May 19 – Jun 8
Danish Ballhead Cabbage brassica Feb 18 May 29 – Jun 8
Drumhead Cabbage brassica Feb 18 May 19 – May 29
Dutch Yellow Shallots allium Feb 4 May 5 – Jun 4
French Red Shallots allium Feb 4 May 5 – Jun 4
Giant Imperial Mix Larkspur Flowers flower Feb 18 May 29 – Jun 18
Giant Maximum Mix Snapdragon Flowers flower Feb 18 May 9 – May 24
Giant Musselburgh Leeks allium Feb 18 May 29 – Jun 3
Glory of Enkhuizen Cabbage brassica Feb 18 May 19
Hamburg Rooted Parsley herb Feb 18 May 19 – Jun 8
Holland Red Shallots allium Feb 4 May 5 – Jun 4
OG American Flag Leeks allium Feb 18 May 19 – May 29
Savoy Perfection Cabbage brassica Feb 18 May 19 – May 24
Texas 1015Y SuperSweet Onion root vegetable Feb 4 May 20 – May 30
Abe Lincoln Tomatoes tomato Mar 11 May 30 – Jun 9
Ace 55 Tomatoes tomato Mar 11 May 25 – May 30
Acorn Squash squash Mar 11 May 30 – Jun 19
All Sorts Surprise Mix Sunflowers flower Mar 4 May 13 – Jun 12
Amarillo Yellow Carrots root vegetable Mar 4 May 18
Amish Paste Tomatoes tomato Mar 18 May 31 – Jun 11
Ancho Grande Hot Peppers pepper Mar 11 May 25 – Jun 4
Angelica herb Mar 4 May 23 – Jun 2
Anna Russian Tomatoes tomato Mar 11 May 20
Armenian Cucumber cucumber Mar 11 May 10 – May 20
Arroyo Lupine Flowers flower Mar 4 May 28 – Jun 17
Ashley Cucumber cucumber Mar 11 May 5 – May 10
Atkinson Tomatoes tomato Mar 11 May 20 – May 30
Aunt Molly's Ground Cherry vegetable Mar 4 May 13 – Jun 2
Aunt Ruby's German Green Tomatoes tomato Mar 11 May 30
Autumn King Carrots root vegetable Mar 4 May 18 – May 23
Baby Blue Eyes Flowers flower Mar 4 May 3 – Jun 2
Bachelor's button edible flowers flower Mar 4 May 3 – May 23
Banana Peppers pepper Mar 25 May 24 – Jun 3
Barletta, Pearly White Onions root vegetable Mar 4 May 18 – May 23
Basil Herb Mix herb Mar 11 May 10 – May 30
Better Boy Tomatoes tomato Mar 11 May 20 – May 25
Big Beef Tomatoes tomato Mar 11 May 20
Big Bertha Peppers pepper Mar 18 May 27 – May 30
Big Boy Tomatoes tomato Mar 11 May 28
Big Jim Hatch Chile pepper Mar 18 May 27 – Jun 1
Black Beauty Eggplant vegetable Mar 4 May 18 – Jun 2
Black Cherry Tomatoes tomato Mar 18 May 21 – Jun 1
Black Pearl Tomatoes tomato Mar 11 May 15
Black-Eyed Pea legume Mar 11 May 15 – May 20
Blondkopfchen Tomatoes tomato Mar 11 May 25 – May 30
Blue Lake Pole Bean legume Mar 11 May 16 – May 25
Bonny Best Tomatoes tomato Mar 11 May 25 – May 30
Borlotti Bush Bean legume Mar 11 May 5 – May 15
Bradley Tomatoes tomato Mar 11 May 25 – May 30
Broccolini brassica Mar 18 May 7 – May 27
California Giant Mix Zinnia Flowers flower Mar 4 May 3 – May 13
California Wonder Peppers pepper Mar 18 May 29 – Jun 1
Calypso Bean legume Mar 11 May 20 – Jun 9
Calypso Tomatoes tomato Mar 11 May 25 – May 30
Canary Bird Zinnia Flowers flower Mar 4 May 3 – May 13
Caribe Tomatoes tomato Mar 11 May 25 – Jun 4
Carmello Tomatoes tomato Mar 11 May 20 – May 25
Carmen Peppers pepper Mar 18 May 17 – Jun 6
Caserta Summer Squash squash Mar 11 May 15
Casper Eggplant vegetable Mar 18 May 27
Celebrity Tomatoes tomato Mar 11 May 20 – May 22
Chadwick's Cherry Tomatoes tomato Mar 11 May 20 – Jun 9
Chantenay Carrots root vegetable Mar 4 May 13
Cherokee Trail of Tears Bean legume Mar 11 May 15 – Jun 9
Cherry Queen Zinnia Flowers flower Mar 4 May 3 – May 13
Chinese Snake Cucumber cucumber Mar 11 May 25
Chioggia Beet root vegetable Mar 11 May 5 – May 15
Chocolate Bell Sweet Peppers pepper Mar 18 May 22 – Jun 6
Chocolate Cherry Sunflowers flower Mar 4 May 18 – Jun 2
Chocolate Cherry Tomatoes tomato Mar 11 May 25 – May 30
Chocolate Stripes Tomatoes tomato Mar 11 May 30
Cinnamon Basil herb Mar 11 May 15 – May 30
Classic Tomatillos vegetable Mar 11 May 30 – Jun 4
Cosmic Purple Carrot root vegetable Mar 11 May 8 – May 25
Cosmos flower Mar 4 May 13 – Jun 2
Cosmos Sensations Mix Flowers flower Mar 4 May 13 – May 18
Costoluto Genovese Tomatoes tomato Mar 11 May 20 – May 30
Crackerjack Mix Marigolds flower Mar 4 May 3 – May 18
Crego Mix Aster Flowers flower Mar 4 May 23 – Jun 2
Creole Tomatoes tomato Mar 11 May 30 – Jun 9
Crimson Clover cover crop Mar 4 May 3 – Jun 2
Crimson Forest Bunching Onions root vegetable Mar 4 May 3
Crimson Sweet Watermelon melon Mar 4 May 23 – Jun 2
Cubanelle Peppers pepper Mar 25 May 26 – Jun 3
Cupid Grape Tomatoes tomato Mar 11 May 15 – May 20
Curly Parsley herb Mar 4 May 13 – May 23
Cylindra Beets root vegetable Mar 4 May 3
Danvers Carrot root vegetable Mar 11 May 20 – May 30
Dark Green Summer Squash squash Mar 11 May 30
Dark Opal Basil herb Mar 18 May 17 – Jun 1
Delicata Squash squash Mar 11 May 30 – Jun 19
Delicious Tomatoes tomato Mar 11 May 25 – May 30
Detroit Dark Red Beet root vegetable Mar 11 May 5 – May 10
Diva Cucumbers cucumber Mar 11 May 8
Dolce Fresca Basil herb Mar 18 May 17 – May 27
Dragon Tongue Bean legume Mar 11 May 5 – May 10
Dwarf Long Pod Okra vegetable Mar 25 May 19 – May 24
Early Girl Tomatoes tomato Mar 18 May 9 – May 19
Edamame legume Mar 11 May 25 – Jun 14
Egg Tomatoes tomato Mar 11 May 25 – May 30
Emerald Green Velvet Okra vegetable Mar 18 May 12 – May 15
Epazote herb Mar 11 May 5 – May 15
Evening Sun Sunflowers flower Mar 4 May 23 – Jun 2
Everbearing Cucumber cucumber Mar 11 May 10
Fava Bean legume Mar 11 May 25 – Jun 19
Firecracker Hot Peppers pepper Mar 11 May 30 – Jul 9
Fish Peppers pepper Mar 18 May 27 – Jun 6
Five Star Grape Tomatoes tomato Mar 11 May 12
Flat-Leaf Parsley herb Mar 4 May 13 – Jun 2
Floradade Tomatoes tomato Mar 11 May 20 – May 25
Fortex Pole Bean legume Mar 11 May 10 – May 20
Gaillardia Annual Mix Flowers flower Mar 4 May 13 – Jun 2
Gardener's Delight Tomatoes tomato Mar 11 May 10 – May 25
Genovese Basil herb Mar 18 May 17 – May 27
German Chamomile herb Mar 4 May 3 – May 8
Glacier Tomatoes tomato Mar 11 May 5 – May 8
Globe Gilia Flowers flower Mar 4 May 3 – May 23
Golden Bantam Sweet Corn vegetable Mar 18 May 26 – Jun 1
Golden Beet root vegetable Mar 11 May 5 – May 15
Golden Bush Scallop Summer Squash squash Mar 11 May 15
Golden Marconi Sweet Peppers pepper Mar 18 May 22 – Jun 6
Golden Sunray Tomatoes tomato Mar 11 May 25 – May 30
Greek Basil herb Mar 11 May 15 – May 25
Green Cabbage brassica Mar 18 May 17 – Jun 26
Green Envy Tomatoes tomato Mar 11 May 10 – May 20
Green Fingers Persian Cucumber cucumber Mar 11 May 5 – May 10
Green Grape Tomatoes tomato Mar 11 May 15 – May 28
Green shiso leaves herb Mar 11 May 10 – May 20
Gypsy Peppers pepper Mar 18 May 17 – May 22
H-19 Little Leaf Cucumbers cucumber Mar 11 May 7 – May 12
Hairy vetch cover crop stands cover crop Mar 4 May 3 – Jun 2
Hatch Green Chile (NM 6-4) Peppers pepper Mar 18 May 27 – Jun 6
Henderson Bush Lima Bean legume Mar 14 May 14 – May 23
Heritage Rainbow Blend Carrots root vegetable Mar 4 May 13 – May 18
Homemade Pickles Cucumber cucumber Mar 11 May 5 – May 10
Homestead Tomatoes tomato Mar 11 May 30 – Jun 4
Honey Bee Tomatoes tomato Mar 11 May 10
Hungarian Hot Wax Pepper pepper Mar 18 May 22 – Jun 1
Indigo Rose Tomatoes tomato Mar 11 May 25 – Jun 9
Isis Candy Cherry Tomatoes tomato Mar 11 May 20 – May 30
Italian Large Leaf Basil herb Mar 11 May 10 – May 25
Jacob's Cattle beans legume Mar 11 May 30 – Jun 9
Jade Bush Bean legume Mar 11 May 5 – May 10
Jalapeño Peppers pepper Mar 18 May 22 – Jun 1
Jaune Flamme Tomatoes tomato Mar 11 May 30
Jet Star Tomatoes tomato Mar 11 May 20 – May 22
Jubilee Tomatoes tomato Mar 11 May 25 – May 30
Juliet Tomatoes tomato Mar 11 May 9 – May 11
Kapoor Tulsi (Holy Basil) herb Mar 18 May 17
Kellogg's Breakfast tomatoes tomato Mar 11 May 25 – Jun 4
Kentucky Wonder Pole Bean legume Mar 11 May 15 – May 22
King Arthur Peppers pepper Mar 18 May 19 – May 25
Kuroda Carrots root vegetable Mar 4 May 13
Large Red Cherry Tomatoes tomato Mar 11 May 20 – May 30
Lemon Cucumber cucumber Mar 4 May 3 – May 13
Lettuce Leaf Basil herb Mar 11 May 15 – May 30
Licorice Basil herb Mar 11 May 15 – May 30
Lima Bean legume Mar 11 May 10 – May 30
Lime Basil herb Mar 11 May 15 – May 25
Long Green Louisiana Eggplant vegetable Mar 18 May 22 – May 27
Long Ping Tung Eggplant vegetable Mar 18 May 12 – May 17
Love-in-a-Mist Flowers flower Mar 4 May 8 – May 28
Luminosa Zinnia Flowers flower Mar 4 May 3 – May 13
Lunar White Carrots root vegetable Mar 4 May 18 – May 23
Lunchbox Mini Peppers pepper Mar 25 May 19 – May 24
Mammoth Sunflower flower Mar 4 May 8 – May 23
Manitoba Tomatoes tomato Mar 11 May 5 – May 15
Marglobe Improved Tomatoes tomato Mar 11 May 20 – May 30
Marglobe Supreme Tomatoes tomato Mar 11 May 20 – May 30
Mariachi Peppers pepper Mar 18 May 23 – Jun 1
Marion Tomatoes tomato Mar 11 May 25 – May 30
Marketer Cucumber cucumber Mar 11 May 5
Marketmore 76 Cucumber cucumber Mar 18 May 15 – May 25
Matt's Wild Cherry Tomatoes tomato Mar 11 May 5 – May 15
Midnight Snack Tomatoes tomato Mar 18 May 22 – May 27
Money Maker Tomatoes tomato Mar 11 May 25 – Jun 4
Mountain Magic Tomatoes tomato Mar 18 May 29 – Jun 1
Mrs. Burns Lemon Basil herb Mar 11 May 10 – May 20
Mucho Nacho Jalapeño Peppers pepper Mar 18 May 25 – May 27
Muncher Cucumber cucumber Mar 11 May 10 – May 15
Nantes Carrot root vegetable Mar 11 May 12 – May 25
New Sunn Hemp Cover Crop cover crop Mar 11 May 10 – Jun 9
Nodding Catchfly Flowers flower Mar 4 May 3 – Jun 2
Nutri-Red Carrots root vegetable Mar 4 May 13 – May 18
Orange King Zinnia Flowers flower Mar 4 May 3 – May 13
Orange Oxheart Tomatoes tomato Mar 11 May 25 – Jun 4
Oregon Spring Tomatoes tomato Mar 11 May 8 – May 20
Orion Florence Fennel vegetable Mar 11 May 30 – Jun 9
Padron Peppers pepper Mar 25 May 24 – May 29
Pasilla de Oaxaca Hot Peppers pepper Mar 11 May 25 – Jun 4
Patio Princess Tomatoes tomato Mar 11 May 15 – May 20
Paul Robeson tomatoes tomato Mar 11 May 20 – Jun 4
Pepperoncini Pepper pepper Mar 11 May 15 – May 25
Pesto Perpetuo Basil herb Mar 18 May 17 – Jun 16
Pineapple Tomatillos vegetable Mar 11 May 20 – May 30
Pink Delicious Tomatoes tomato Mar 11 May 30 – Jun 3
Pink Oxheart Tomatoes tomato Mar 11 May 30 – Jun 9
Pinkeye Purple Hull Cowpea legume Mar 11 May 10 – May 20
Pistou Basil herb Mar 18 May 17
Plains Coreopsis flower Mar 4 May 3 – May 13
Poblano Peppers pepper Mar 18 May 22 – Jun 1
Polar Bear Zinnia Flowers flower Mar 4 May 3 – May 13
Ponderosa Red Beefsteak Tomatoes tomato Mar 11 May 25 – May 30
Poona Kheera Cucumbers cucumber Mar 11 May 5 – May 15
Popcorn vegetable Mar 4 May 28 – Jul 2
Powderpuff Aster Flowers flower Mar 4 May 18 – May 28
Prizewinner Runner Pole Bean legume Mar 11 May 25 – Jun 1
Purple Basil herb Mar 18 May 27 – Jun 11
Purple Beauty Sweet Peppers pepper Mar 18 May 27 – Jun 1
Purple Carrots root vegetable Mar 4 May 13 – May 18
Purple Haze Carrots root vegetable Mar 4 May 13 – May 16
Purple Tomatillos vegetable Mar 11 May 25 – Jun 4
Pápalo leaves herb Mar 4 May 13 – May 23
Queen Anne's Lace Flowers flower Mar 4 May 28 – Jun 12
Rattlesnake Pole Bean legume Mar 11 May 10 – May 20
Red Burgundy Okra vegetable Mar 18 May 12 – May 17
Red Cabbage brassica Mar 18 May 27 – Jul 6
Red Cayenne Hot Peppers pepper Mar 11 May 25 – Jun 4
Red Cherry Hot Peppers pepper Mar 11 May 25 – Jun 4
Red Garnet Amaranth vegetable Mar 11 May 5 – May 10
Red Mushroom Hot Peppers pepper Mar 11 May 25 – Jun 4
Red Pear Tomatoes tomato Mar 11 May 15 – May 25
Red Robin Tomatoes tomato Mar 18 May 12
Red Rubin Basil herb Mar 18 May 29
Red Velvet Leaf Basil herb Mar 11 May 15 – May 30
Rio Grande Tomatoes tomato Mar 11 May 25 – May 30
Roma II Bush Bean legume Mar 11 May 3 – May 9
Romano Pole Bean legume Mar 11 May 10 – May 18
Rutgers Tomato tomato Mar 18 May 27 – Jun 6
Sakura Tomatoes tomato Mar 11 May 5 – May 10
Salad Bush Cucumbers cucumber Mar 11 May 7 – May 8
Santa Fe Grande Hot Peppers pepper Mar 11 May 25 – May 30
Serrano Peppers pepper Mar 18 May 27 – Jun 6
Shelling Pea legume Mar 11 May 5 – May 20
Shishito Peppers pepper Mar 25 May 24 – May 29
Signet marigold edible flowers flower Mar 4 May 3 – May 8
Single Mix China Aster Flowers flower Mar 4 May 13 – May 23
Slenderette Bush Bean legume Mar 11 May 3 – May 7
Snow Crown Cauliflower brassica Mar 18 May 7 – May 17
Snow Pea legume Mar 11 May 2 – May 20
Snow White Carrots root vegetable Mar 4 May 13 – May 18
Solar Yellow Carrots root vegetable Mar 4 May 13 – May 18
Spacemaster Bush Cucumber cucumber Mar 11 May 10 – May 15
Spicy Globe Basil herb Mar 18 May 27
St. Valery Carrots root vegetable Mar 4 May 13
Straight Eight Cucumber cucumber Mar 11 May 10 – May 15
Stupice Tomatoes tomato Mar 11 May 15
Sugar Snap Pea legume Mar 11 May 5 – May 20
Summer Savory herb Mar 11 May 5 – May 15
Sun Gold Sunflowers flower Mar 4 May 23 – Jun 7
Sun Gold Tomatoes tomato Mar 11 May 7 – May 15
SunChocola Tomatoes tomato Mar 11 May 10 – May 20
Sungella Tomatoes tomato Mar 11 May 10 – May 20
Sunray Tomatoes tomato Mar 11 May 25 – May 30
Suyo Long Cucumbers cucumber Mar 11 May 10 – May 15
Sweet 100 Tomatoes tomato Mar 11 May 10 – May 15
Sweet Marjoram herb Mar 11 May 25 – Jun 9
Sweet Million Tomatoes tomato Mar 18 May 17 – May 22
Sweet Success Cucumbers cucumber Mar 11 May 4 – May 8
Sweet Treats Tomatoes tomato Mar 11 May 15 – May 25
Tabasco Hot Peppers pepper Mar 11 May 30 – Jun 9
Tasty Jade Cucumbers cucumber Mar 11 May 4
Tavera Filet Bean legume Mar 11 May 4
Taylor Dwarf Bush Bean legume Mar 11 May 15 – May 18
Tendergreen Burpless Cucumber cucumber Mar 11 May 15
Tendersweet Carrots root vegetable Mar 4 May 13
Texas Bluebonnet Lupine Flowers flower Mar 4 May 18 – Jun 7
Thai Basil herb Mar 18 May 17 – May 22
Thessaloniki Tomatoes tomato Mar 11 May 25 – May 30
Thorogreen Bush Lima Bean legume Mar 14 May 18 – May 28
Tiger Eye Bean legume Mar 11 May 30 – Jun 9
Tigerella Tomatoes tomato Mar 11 May 5 – May 20
Tiny Tim Tomatoes tomato Mar 18 May 2 – May 12
Tomatillo vegetable Mar 4 May 3 – May 28
Tongue of Fire Bean legume Mar 11 May 10 – Jun 14
Trucker's Favorite Corn vegetable Mar 11 May 25 – Jun 4
Tumbling Tom Red Tomatoes tomato Mar 18 May 22 – May 27
Velvet Queen Sunflowers flower Mar 4 May 18 – Jun 2
Verde Tomatillos vegetable Mar 11 May 25 – Jun 4
Vermont Cranberry Bean legume Mar 11 May 15 – Jun 14
VR Moscow Tomatoes tomato Mar 11 May 30 – Jun 9
Wautoma Cucumbers cucumber Mar 11 May 10
West Indian Burr Gherkin Cucumber cucumber Mar 11 May 5 – May 15
White Cherry Tomatoes tomato Mar 11 May 20 – May 25
White Cloud Sweet Peppers pepper Mar 18 May 27 – Jun 1
White Emergo Runner Pole Bean legume Mar 11 May 25 – May 30
White Lisbon Bunching Onions root vegetable Mar 4 May 8
White Wonder Cucumber cucumber Mar 11 May 5 – May 10
Wisconsin SMR 58 Cucumbers cucumber Mar 11 May 5 – May 8
Yard Long Bean legume Mar 11 May 10 – Jun 9
Yellow Beefsteak Tomatoes tomato Mar 11 May 25 – Jun 4
Yellow Jalapeno (Caloro) Hot Peppers pepper Mar 11 May 25 – Jun 4
Yellow Mushroom Hot Peppers pepper Mar 11 May 25 – Jun 4
Yellow Pear Tomatoes tomato Mar 11 May 20 – May 30
Yolo Wonder Sweet Peppers pepper Mar 18 May 27 – Jun 6
Yukon Gold Potato root vegetable Mar 11 May 30 – Jun 19
Zinnia flower Mar 4 May 3 – Jun 2

Key Tasks for May in Zone 9A

  1. 1 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.
Back to full Zone 9A planting calendar
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