When is the last frost in USDA Zone 9B?

The average last spring frost in Zone 9B is January 28, with a range from Jan 10 to Feb 15 depending on the specific year. Data from NOAA 1991–2020 Climate Normals.

When is the first fall frost in Zone 9B?

The average first fall frost in Zone 9B is December 28, with a range from Dec 10 to Jan 15.

How long is the growing season in Zone 9B?

The average frost-free growing season in Zone 9B is 335 days, running from approximately January 28 to December 28.

When should I start seeds indoors in Zone 9B?

In Zone 9B, start tomatoes and peppers indoors 8–10 weeks before the last frost date of January 28. That means starting seeds in mid-winter to early spring depending on your specific transplant targets.

USDA Zone 9B

Zone 9B Planting Calendar — January 28 to December 28

Zone 9b is the warmest zone in the continental US. Frost is rare and brief when it occurs. Miami, southern California, and the Rio Grande Valley share this zone but with very different humidity and rainfall patterns. Primary vegetable production typically runs October through April, with summer being a genuine off-season for most standard crops.

Zone 9B at a glance: Last frost averages January 28 (range Jan 10–Feb 15). First fall frost averages December 28. Growing season is 335 days. Start warm-season crops indoors 6–10 weeks before last frost; transplant after January 28.

Last Spring Frost

January 28

Range: Jan 10 – Feb 15

First Fall Frost

December 28

Range: Dec 10 – Jan 15

Growing Season

335 days

Avg. frost-free window

Winter Low

25° to 30°F

Average minimum temp

Reference City

Miami, FL

Climate data source

Annual Rainfall

62"

Tropical wet pattern

Zone 9B Planting Calendar — All Crops

Dates based on January 28 average last frost. Start indoors dates assume seed starting under grow lights or in a warm window. All dates are averages — adjust based on your specific microclimate and the current year's weather.

Plant	Type	Start Indoors	Transplant / Direct Sow	Harvest Window
Acorn Squash	vegetable	—	Jan 28 Plant Out	Apr 18 – May 8
Amish Paste Tomatoes	tomato	Dec 31	Jan 28 Transplant	Apr 12 – Apr 23
Astro Arugula	vegetable	—	Jan 28 Plant Out	Feb 18 – Mar 9
Aunt Molly's Ground Cherry	vegetable	—	Jan 28 Plant Out	Apr 8 – Apr 28
Bee Balm	flower	—	Jan 28 Plant Out	—
Better Boy Tomatoes	tomato	Jan 7	Jan 28 Transplant	Apr 8 – Apr 13
Black Beauty Eggplant	vegetable	—	Jan 28 Plant Out	Apr 13 – Apr 28
Black-Eyed Pea	vegetable	—	Jan 28 Plant Out	Apr 3 – Apr 8
Black-Eyed Susan	flower	—	Jan 28 Plant Out	—
Bloomsdale Longstanding Spinach	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 21
Blue Lake Bush Bean	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 27
Bok Choy	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 29
Borage	flower	—	Jan 28 Plant Out	Mar 24 – Apr 13
Brilliant Celeriac	celeriac	Dec 17	Jan 28 Transplant	May 18 – May 28
Buckwheat	cover crop	—	Jan 28 Plant Out	Feb 27 – Mar 14
Butterhead Lettuce	vegetable	—	Jan 28 Plant Out	Mar 19 – Apr 3
Calendula	flower	—	Jan 28 Plant Out	Mar 19 – Mar 29
Calypso Cilantro	herb	—	Jan 28 Plant Out	Mar 19 – Mar 24
Celebrity Tomatoes	tomato	Jan 21	Jan 28 Transplant	Apr 8 – Apr 10
Chinese Broccoli (Gai Lan)	vegetable	—	Jan 28 Plant Out	Feb 27 – Mar 19
Chives	herb	—	Jan 28 Plant Out	Mar 29 – Apr 13
Clemson Spineless Okra	vegetable	—	Jan 28 Plant Out	Mar 24 – Apr 2
Common Sage	herb	—	Jan 28 Plant Out	Apr 13 – Apr 28
Contender Bush Bean	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 24
Cosmos	flower	—	Jan 28 Plant Out	Apr 8 – Apr 28
Crimson Clover	cover crop	—	Jan 28 Plant Out	Mar 29 – Apr 28
Crimson Sweet Watermelon	vegetable	—	Jan 28 Plant Out	Apr 18 – Apr 28
Cupid Grape Tomato	tomato	Jan 7	Jan 28 Transplant	Apr 3 – Apr 8
Curly Kale	vegetable	—	Jan 28 Plant Out	Mar 24 – Apr 3
Curly Parsley	herb	Dec 24	Jan 28 Transplant	Apr 8 – Apr 18
Daikon Radishes	daikon radish	Jan 7	Jan 14 Transplant	Feb 28 – Mar 10
Delicata Squash	vegetable	—	Jan 28 Plant Out	Apr 18 – May 8
Dill	herb	—	Jan 28 Plant Out	Mar 9 – Mar 24
Dragon Tongue Bean	vegetable	—	Jan 28 Plant Out	Mar 24 – Mar 29
Echinacea	flower	—	Jan 28 Plant Out	—
Edamame	vegetable	—	Jan 28 Plant Out	Apr 13 – May 3
Endive / Escarole	vegetable	—	Jan 28 Plant Out	Mar 14 – Apr 3
English Lavender	herb	—	Jan 28 Plant Out	Apr 28 – May 28
English Lavender	flower	—	Jan 28 Plant Out	—
Fall Rutabagas	rutabaga	—	Jan 28 Plant Out	Apr 23 – May 8
Fava Bean	vegetable	—	Jan 28 Plant Out	Apr 13 – May 8
Flat-Leaf Parsley	herb	Dec 24	Jan 28 Transplant	Apr 8 – Apr 28
French Marigold	flower	—	Jan 28 Plant Out	Mar 19 – Mar 29
French Tarragon	herb	—	Jan 28 Plant Out	Mar 29 – Apr 18
Garlic Chives	herb	—	Jan 28 Plant Out	Mar 29 – Apr 13
Georgia Southern Collard Greens	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 18
German Chamomile	herb	—	Jan 28 Plant Out	Mar 29 – Apr 3
Green Onion	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 28
Herb Fennel	herb	—	Jan 28 Plant Out	Mar 29 – Apr 8
Horseradish	vegetable	—	Jan 28 Plant Out	Jun 17 – Jul 7
Imperial Star Artichoke	artichoke	Dec 24	Jan 28 Transplant	Apr 28 – May 8
Jack O'Lantern Pumpkin	vegetable	—	Jan 28 Plant Out	Apr 28 – May 18
Japanese Eggplant	vegetable	—	Jan 28 Plant Out	Mar 19 – Apr 3
Jersey Knight Asparagus	vegetable	—	Jan 28 Plant Out	Jan 28 – Jan 27
Juliet Tomatoes	tomato	Jan 7	Jan 28 Transplant	Mar 28 – Mar 30
Kentucky Wonder Pole Bean	vegetable	—	Jan 28 Plant Out	Mar 27 – Apr 8
Lacinato Kale	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 3
Leaf Lettuce Mix	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 24
Leek	vegetable	—	Jan 28 Plant Out	May 8 – Jun 7
Lemon Balm	herb	—	Jan 28 Plant Out	Mar 14 – Mar 29
Lemon Cucumber	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 8
Lemongrass	herb	—	Jan 28 Plant Out	Apr 13 – May 8
Lima Bean	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 18
Mammoth Sunflower	flower	—	Jan 28 Plant Out	Apr 3 – Apr 18
Mesclun Mix	vegetable	—	Jan 28 Plant Out	Feb 18 – Feb 27
Mizuna	vegetable	—	Jan 28 Plant Out	Mar 9 – Mar 19
Mustard Greens	vegetable	—	Jan 28 Plant Out	Mar 4 – Mar 19
Mâche (Corn Salad)	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 22
Napa Cabbage	vegetable	—	Jan 28 Plant Out	Apr 8 – Apr 28
Nasturtium	flower	—	Jan 28 Plant Out	Mar 19 – Apr 3
National Pickling Cucumber	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 27
Patio Princess Tomatoes	tomato	Jan 7	Jan 28 Transplant	Apr 3 – Apr 8
Pattypan Squash	vegetable	—	Jan 28 Plant Out	Mar 16 – Mar 24
Peppermint	herb	—	Jan 28 Plant Out	Feb 27 – Mar 14
Popcorn	vegetable	—	Jan 28 Plant Out	Apr 23 – May 28
Provider Bush Bean	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 24
Radicchio	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 23
Red Leaf Lettuce	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 24
Red Russian Kale	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 29
Rhubarb	vegetable	—	Jan 28 Plant Out	Jan 28
Romaine Lettuce	vegetable	—	Jan 28 Plant Out	Apr 3 – Apr 13
Scarlet Runner Bean	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 8
Shallot	vegetable	—	Jan 28 Plant Out	Apr 28 – May 28
Shelling Pea	vegetable	—	Jan 28 Plant Out	Mar 24 – Apr 8
Silver Queen Sweet Corn	vegetable	—	Jan 28 Plant Out	Apr 28 – Apr 30
Snow Pea	vegetable	—	Jan 28 Plant Out	Mar 21 – Apr 8
Spaghetti Squash	vegetable	—	Jan 28 Plant Out	Apr 26 – May 8
Spearmint	herb	—	Jan 28 Plant Out	Feb 27 – Mar 14
Stevia	herb	—	Jan 28 Plant Out	Apr 28 – May 28
Sugar Pie Pumpkin	vegetable	—	Jan 28 Plant Out	Apr 28 – May 18
Sugar Snap Pea	vegetable	—	Jan 28 Plant Out	Mar 24 – Apr 8
Sun Gold Tomatoes	tomato	Jan 7	Jan 28 Transplant	Mar 26 – Apr 3
Supersweet 100 Tomatoes	tomato	Jan 7	Jan 28 Transplant	Mar 29 – Apr 3
Sweet 100 Tomatoes	tomato	Jan 7	Jan 28 Transplant	Mar 29 – Apr 3
Sweet Alyssum	flower	—	Jan 28 Plant Out	Mar 9 – Mar 24
Swiss Chard	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 29
Tall Utah 52-70 Celery	vegetable	—	Jan 28 Plant Out	May 8 – Jun 7
Tomatillo	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 23
Winner Kohlrabi	vegetable	—	Jan 28 Plant Out	Mar 14 – Mar 19
Yard Long Bean	vegetable	—	Jan 28 Plant Out	Mar 29 – Apr 28
Yarrow	flower	—	Jan 28 Plant Out	—
Yellow Crookneck Squash	vegetable	—	Jan 28 Plant Out	Mar 19 – Mar 29
Yellow Pear Tomatoes	tomato	Jan 7	Jan 28 Transplant	Apr 8 – Apr 16
Zinnia	flower	—	Jan 28 Plant Out	Mar 29 – Apr 28
Alexandria Alpine Strawberry	strawberry	Dec 24	Feb 4 Transplant	May 15 – Jun 4
Anaheim Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 29 – May 7
Armenian Cucumber	cucumber	Jan 21	Feb 4 Transplant	Apr 5 – Apr 15
Baby Cakes Blackberry	blackberry	—	Feb 4 Plant Out	Feb 4 – Apr 5
Banana Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 19 – Apr 29
Bay Laurel	bay laurel	—	Feb 4 Plant Out	Apr 5 – Feb 4
Beauregard Sweet Potato	root	—	Feb 4 Direct Sow	May 5 – May 20
Beefsteak Tomatoes	tomato	Feb 4	Feb 11 Transplant	May 2 – May 7
Bhut Jolokia Ghost Pepper	pepper	Jan 7	Feb 11 Transplant	May 12 – Jun 11
Big Jim Hatch Chile	pepper	Jan 7	Feb 11 Transplant	Apr 22 – Apr 27
Black Beauty Zucchini	vegetable	Jan 11	Feb 8 Transplant	Mar 25 – Apr 4
Black Cherry Tomato	tomato	Jan 14	Feb 11 Transplant	Apr 16 – Apr 27
Black Krim Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 27 – May 2
Black Oil Sunflower Microgreens	sunflower microgreens	Feb 4	Feb 11 Transplant	Feb 18 – Feb 23
Brandywine Tomatoes	tomato	Feb 4	Feb 11 Transplant	May 2 – May 12
Broccolini	vegetable	Jan 7	Feb 11 Transplant	Apr 2 – Apr 22
Brussels Sprouts	vegetable	Jan 7	Feb 11 Transplant	May 7 – Jun 1
Butternut Squash	vegetable	Jan 14	Feb 11 Transplant	May 22 – Jun 11
California Wonder Peppers	pepper	Dec 31	Feb 4 Transplant	Apr 17 – Apr 20
Cantaloupe	vegetable	Jan 14	Feb 11 Transplant	May 2 – May 12
Caribbean Red Scotch Bonnet Pepper	pepper	Jan 7	Feb 11 Transplant	May 17 – Jun 11
Cayenne Peppers	pepper	Jan 7	Feb 11 Transplant	May 7 – May 17
Celeste Fig	fig	—	Feb 11 Plant Out	Feb 11
Cherokee Purple Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 30 – May 7
Cherry Belle Radish	root	—	Feb 4 Direct Sow	Feb 25 – Mar 6
Chicago Hardy Fig	fig	—	Feb 11 Plant Out	Feb 11
Chioggia Beet	root	—	Feb 4 Direct Sow	Mar 31 – Apr 10
Corno di Toro Pepper	pepper	Jan 7	Feb 11 Transplant	Apr 27 – May 2
Cosmic Purple Carrot	root	—	Feb 4 Direct Sow	Apr 3 – Apr 20
Cubanelle Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 21 – Apr 29
Culinary Turmeric	turmeric	Jan 21	Feb 18 Transplant	Oct 16 – Dec 15
Danvers Carrot	root	—	Feb 4 Direct Sow	Apr 15 – Apr 25
Detroit Dark Red Beet	root	—	Feb 4 Direct Sow	Mar 31 – Apr 5
Early Girl Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 4 – Apr 14
Eight Ball Zucchini	zucchini	Jan 21	Feb 4 Transplant	Mar 21 – Mar 31
English Thyme	herb	—	Feb 4 Plant Out	Apr 15 – May 5
Epazote	epazote	Jan 14	Feb 4 Transplant	Mar 31 – Apr 10
French Breakfast Radish	root	—	Feb 4 Direct Sow	Feb 25 – Mar 4
Fresno Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 27 – May 2
Genovese Basil	herb	Jan 14	Feb 11 Transplant	Apr 12 – Apr 22
Ginger	ginger	Jan 21	Feb 18 Transplant	Oct 16 – Dec 15
Gold Rush Zucchini	zucchini	Jan 21	Feb 4 Transplant	Mar 21 – Mar 26
Golden Beet	root	—	Feb 4 Direct Sow	Mar 31 – Apr 10
Greek Oregano	herb	—	Feb 4 Plant Out	Apr 5 – Apr 25
Green Cabbage	vegetable	Jan 7	Feb 11 Transplant	Apr 12 – May 22
Green Fingers Persian Cucumber	cucumber	Jan 21	Feb 4 Transplant	Mar 31 – Apr 5
Green Zebra Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 27 – Apr 30
Habanero Pepper	pepper	Jan 7	Feb 18 Transplant	May 19 – Jun 18
Heirloom Red Kuri Squash	winter squash	Jan 21	Feb 4 Transplant	May 5 – May 15
Heritage Raspberry	raspberry	—	Feb 4 Plant Out	Feb 4 – Apr 5
Honeydew Melon	vegetable	Jan 14	Feb 11 Transplant	May 22 – Jun 6
Hungarian Hot Wax Pepper	pepper	Jan 7	Feb 11 Transplant	Apr 17 – Apr 27
Improved Meyer Lemon	meyer lemon	—	Feb 11 Plant Out	Feb 11 – Feb 10
Jalapeño Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 17 – Apr 27
Jimmy Nardello Peppers	pepper	Jan 14	Feb 18 Transplant	May 9 – May 19
King Arthur Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 21 – Apr 27
Lemon Verbena	lemon verbena	—	Feb 4 Plant Out	May 5 – Jun 4
Lunchbox Mini Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 14 – Apr 19
Marketmore 76 Cucumber	vegetable	Jan 14	Feb 11 Transplant	Apr 10 – Apr 20
Midnight Snack Tomato	tomato	Jan 14	Feb 11 Transplant	Apr 17 – Apr 22
Mortgage Lifter Tomatoes	tomato	Feb 4	Feb 11 Transplant	May 2 – May 7
Mountain Magic Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 24 – Apr 27
Mrs. Burns Lemon Basil	basil	Jan 7	Feb 4 Transplant	Apr 5 – Apr 15
Mucho Nacho Jalapeño Peppers	pepper	Jan 14	Feb 11 Transplant	Apr 20 – Apr 22
Nagami Kumquat	kumquat	—	Feb 11 Plant Out	Feb 11 – Feb 10
Nantes Carrot	root	—	Feb 4 Direct Sow	Apr 7 – Apr 20
New Zealand Spinach	new zealand spinach	Jan 21	Feb 4 Transplant	Mar 26 – Apr 5
Orion Florence Fennel	fennel	Jan 14	Feb 4 Transplant	Apr 25 – May 5
Ozark Beauty Strawberry	strawberry	—	Feb 4 Plant Out	Apr 5 – May 5
Padron Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 19 – Apr 24
Parsnip	root	—	Feb 4 Direct Sow	May 15 – Jun 14
Patriot Blueberry	blueberry	—	Feb 4 Plant Out	Feb 4 – Feb 3
Pinkeye Purple Hull Pea	cowpea	Dec 17	Feb 11 Transplant	Apr 7 – Apr 20
Poblano Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 17 – Apr 27
Purple Basil	herb	Jan 14	Feb 11 Transplant	Apr 22 – May 7
Rambo Radish Microgreens	radish microgreens	Feb 4	Feb 11 Transplant	Feb 17 – Feb 21
Raspberry Shortcake Raspberry	raspberry	—	Feb 4 Plant Out	Feb 4 – Apr 5
Red Cabbage	vegetable	Jan 7	Feb 11 Transplant	Apr 22 – Jun 1
Red Pontiac Potato	root	—	Feb 4 Direct Sow	May 5 – May 25
Red-Stem Malabar Spinach	malabar spinach	Jan 21	Feb 11 Transplant	Apr 7 – Apr 22
Roma VF Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 27 – May 2
Romanesco	vegetable	Jan 7	Feb 11 Transplant	Apr 27 – May 22
Rosemary	herb	—	Feb 11 Plant Out	May 2 – May 22
Rutgers Tomato	tomato	Jan 14	Feb 11 Transplant	Apr 22 – May 2
San Marzano Tomatoes	tomato	Feb 4	Feb 11 Transplant	Apr 30 – May 10
Seascape Strawberry	strawberry	—	Feb 4 Plant Out	Apr 20 – May 5
Serrano Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 22 – May 2
Shishito Peppers	pepper	Jan 14	Feb 18 Transplant	Apr 19 – Apr 24
Snow Crown Cauliflower	vegetable	Jan 7	Feb 11 Transplant	Apr 2 – Apr 12
Softneck Garlic	root	—	Feb 4 Direct Sow	Oct 2 – Nov 1
Spacemaster Bush Cucumber	cucumber	Jan 21	Feb 4 Transplant	Apr 5 – Apr 10
Speckled Pea Shoot Microgreens	pea shoot microgreens	Feb 4	Feb 11 Transplant	Feb 19 – Feb 25
Straight Eight Cucumber	cucumber	Jan 21	Feb 4 Transplant	Apr 5 – Apr 10
Sugar Baby Watermelon	vegetable	Jan 14	Feb 11 Transplant	Apr 27 – May 2
Sunshine Blue Blueberry	blueberry	—	Feb 4 Plant Out	Feb 4 – Feb 3
Sunshine Kabocha Squash	winter squash	Jan 21	Feb 4 Transplant	May 10 – May 15
Sweet Marjoram	marjoram	Jan 7	Feb 4 Transplant	Apr 20 – May 5
Sweet Million Tomato	tomato	Jan 14	Feb 11 Transplant	Apr 12 – Apr 17
Thai Basil	herb	Jan 14	Feb 11 Transplant	Apr 12 – Apr 17
Thai Hot Peppers	pepper	Jan 7	Feb 11 Transplant	Apr 27 – May 7
Tiny Tim Tomato	tomato	Jan 14	Feb 11 Transplant	Mar 28 – Apr 7
Top Hat Blueberry	blueberry	—	Feb 4 Plant Out	Feb 4 – Feb 3
Tumbling Tom Red Tomato	tomato	Jan 14	Feb 11 Transplant	Apr 17 – Apr 22
Turnip	root	—	Feb 4 Direct Sow	Mar 26 – Apr 5
Waltham 29 Broccoli	vegetable	Jan 7	Feb 11 Transplant	Apr 27 – May 12
Watermelon Radish	root	—	Feb 4 Direct Sow	Mar 26 – Apr 10
Yukon Gold Potato	root	—	Feb 4 Direct Sow	Apr 25 – May 15
Garlic	garlic	Jul 25	Aug 1 Transplant	Mar 29 – Apr 28
Tatsoi	tatsoi	Dec 17	Dec 31 Transplant	Jan 25 – Feb 14
Texas 1015Y SuperSweet Onion	root	Nov 26	Dec 31 Transplant	Apr 15 – Apr 25

Browse Zone 9B by Month

See exactly what to plant, transplant, and harvest each month in Zone 9B.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Zone 9B Growing Tips

Average last spring frost is January 28 and first fall frost is December 28 — these are the anchor dates your entire planting schedule is built around.
Heat + humidity limits most standard vegetable varieties in summer. Tropical varieties and heat-adapted selections essential.
Daily afternoon thunderstorms May-October. Dry season Nov-April is the prime growing window.
Disease pressure in this zone is very-high. Primary risks include bacterial wilt, root knot nematode, fusarium wilt. Proper plant spacing, air circulation, and avoiding overhead watering significantly reduce disease incidence.
Fall cool-season crops (lettuce, spinach, kale, radishes) should go in the ground between October 15 and December 15 for harvest before hard frost arrives.

States in Zone 9B

Zone 9B spans parts of these states. Note that zone boundaries run within states — check your specific ZIP code for your exact zone.

Florida (south, Miami metro) California (San Diego, coastal Los Angeles) Arizona (Tucson) Texas (Rio Grande Valley)

Zone 9A Zone 9B Calendar

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Frost dates from NOAA 1991–2020 Climate Normals via NOAA 1991-2020 Climate Normals, NWS Miami (MFL). Growing season data from UF/IFAS Extension — Miami-Dade County. Planting dates are averages based on zone frost dates and standard horticultural timing — adjust for your local microclimate.