September is the month the calendar and the thermometer finally agree. In most parts of the country, the heat is beginning to break, and the days are noticeably shorter — two signals the garden has been waiting for. In cold winter zones, September is a sprint to the finish: a few seeds can still go in the ground, but the window is closing fast, and the emphasis shifts to transplanting and harvesting. For mild-winter zones, September is prime planting season — the single best month to get cool-season crops in the ground for fall. And for warm-winter zones, September is the real beginning of the gardening year: heat is easing, transplants are going out, and the prime growing season is just getting started.
Cold Winter Zones (3–7): The direct-sow window is nearly closed, but it is not gone. Radishes are the last reliable bet — fast enough to mature before October's frost if you sow them in the first week of September. Brassica transplants started in July and August are the main event now: get them in the ground while there are still 6–8 weeks of growing weather ahead—if you have not ordered yet, order today.
Mild Winter Zones (8–9a): September is your month. Cool-season crops of every kind — leafy greens, root vegetables, brassicas, alliums — go in now. August indoor starts are hardening off and moving outside. Short-day onion transplants are going in. The fall garden is assembling itself in real time, and the seed orders that support it need to happen now.
Warm Winter Zones (9b–12): The turning point has arrived. September is when the fall and winter garden takes physical shape in warm-winter zones. Brassica transplants started in August and will go outside as temperatures ease. Direct sowing of cool-season crops is broadly open. The fall season that defines gardening here — the one that runs from October through March — depends on seeds ordered and planted this month.
50
100
true
//store.trueleafmarket.com/cdn/shop/t/54/assets/review-fallback.json?v=33078429469613971781712858278
![Legend: H for Heirloom, O for Organic, A for AAS Winner, F for staff favorites]()
Squash Seeds - Winter - Waltham Butternut
85-90 days. Cucurbita moschata. Waltham Butternut Winter Squash seeds grow as cool season tender annuals that are fast-maturing. As the summer season fades, butternut squash varieties are the most popular...
Squash Seeds - Winter - Vegetable Spaghetti
80-100 days. Vegetable Spaghetti Winter Squash Seeds. Cucurbita pepo. Non-GMO. Open Pollinated. Grow your own pasta replacement with Vegetable Spaghetti Winter squash seeds. This spaghetti squash is ready in just...
Squash Seeds - Winter - Waltham Butternut (Organic)
110 days to maturity. Cucurbita moschata. Organic Waltham Butternut Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated, AAS winner. Suitable for growing in fields, garden plots, raised beds, and containers. The...
Squash Seeds - Winter - Vegetable Spaghetti (Organic)
80-100 days. Organic Vegetable Spaghetti Winter Squash Seeds. Cucurbita pepo. Non-GMO. Open Pollinated. Grow your own pasta replacement with Organic Vegetable Spaghetti Winter squash seeds. This spaghetti squash is ready...
Squash Seeds - Winter - Burgess Buttercup
Non-GMO Burgess Buttercup is ready in 100 days and recommended by Utah State. This winter squash has a thick, orange, and creamy flesh that tastes like sweet potatoes once cooked....
Squash Seeds - Winter - Sweet Meat
Non-GMO Sweet Meat Winter Squash is ready in 100 days. USU recommends this variety of winter squash due to the fact it's vigorous, heavy-yielding vines. Fruit on Gill's Sweet Meat...
Squash Seeds - Winter - Delicata
Non-GMO Delicata Winter squash is ready in 100 days. This is one of the tastier winter vine squashes with creamy flesh tastes like sweet potatoes. This is where the other...
Squash Seeds - Winter - Pink Banana Jumbo
105-115 Days to maturity. Cucurbita maxima Pink Banana Jumbo Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and large containers. Noted for...
Squash Seeds - Honeynut
Cucurbita moschata (100-110 days) Honey Nut Squash originates from Cornell University. We remember being in Cornell's fields just a few years ago as they were developing this squash. It is...
Squash Seeds - Winter - Blue Hubbard
Blue Hubbard Squash is a blue-gray-green slightly ridged and warted winter squash variety. it's best attributes is its long storage time (6 months!) and its perfectly sweet taste. Don't let...
Squash Seeds - Winter - Japanese Red Kuri (Uchiki Kuri)
95 days to maturity. Cucurbita maxima. Japanese Red Kuri (Uchiki Kuri) Winter Squash Seeds. Non-GMO, annual, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and containers. Teardrop-shaped...
Squash Seeds - Winter - Sweet Dumpling
The sweet and tender flesh of the Sweet Dumpling squash is a fall favorite for many. Planted in the spring for a fall harvest, non-GMO, heirloom Sweet Dumpling squash seeds...
Squash Seeds - Japanese Red Kuri - Organic
Cucurbita maxima. (90 days) Also known as "Uchiki Kuri", "Baby Red Hubbard" or "Orange Hokkaido". Japanese Red Kuri are bright red teardrop shaped squash that average 5-8 pounds. Organic Japanese...
Squash Seeds - Winter - Honeybaby Hybrid
90 to 100 days to maturity. Cucurbita moschata. Honeybaby Hybrid Butternut Winter Squash Seeds. Non-GMO, annual, F1 hybrid, AAS winner 2017. Suitable for growing in fields, garden plots, raised beds,...
Squash Seeds - Winter - Delicata Bush AAS
Delicata Bush AAS Winter Squash Seeds. 80 - 100 days to maturity. 2002 National AAS Winner. Can be grown in containers. Cucurbita pepo. Annual. Heirloom. Healthy semi-bush 3-4 ft. vines,...
Squash Seeds - Winter - Queensland Blue
95 days. Non-GMO. Heirloom. Queensland Blue Winter Squash Seeds from True Leaf Market to enjoy the sweet flavor of squash in soups, pies, and more. This heirloom winter squash from...
Squash Seeds - Lakota
80-120 Days to maturity. Cucurbita maxima . Lakota Squash Seeds. Non-GMO, annual, open-pollinated, heirloom. Suitable for growing in fields, containers, garden plots, raised beds, and greenhouses. Lakota winter squash is...
Squash Seeds - Japanese, Winter - Blue Kuri
Squash Seeds - Japanese, Winter - Blue Kuri. Heirloom, Non-GMO. Cucurbita maxima. 45 days after flowering, 95-110 days to maturity. Warm season annual. A traditional open pollinated Japanese kabocha squash...
Asparagus Seeds - UC 157 F1
Second season harvest. Asparagus officinalis. UC 157 F1 Asparagus Seeds. Non-GMO, perennial, F1 hybrid. This crop is suitable for garden plots, raised beds, and fields. Classic UC Riverside hybrid known...
Squash Seeds - Winter - Gold Nugget
Gold Nugget Winter Squash Seeds. 95 Days to maturity. Non-GMO, heirloom, open pollinated squash seeds. Cucurbita maxima. AKA: Golden Nugget Squash, Oriental Pumpkin. Originally bred as a replacement for sweet...
Squash Seeds - Winter - Green Hubbard
Plant non-GMO, heirloom Green Hubbard Squash Seeds from True Leaf Market to enjoy sweet-tasting winter squash that weighs up to 12 lbs. A great variety for winter storage, the Green...
Squash Seeds - Chirimen
Cucurbita moschata (91 days) 4 g Packet of Heirloom Seeds. Musser Seed Company of Los Angeles introduced this squash in 1922. A Japanese Yokohama type squash. Chirimen is bronze-orange in...
Squash Seeds - Winter - Marina Di Chioggia
95 Days to maturity. Cucurbita maxima. Marina Di Chioggia Squash Seeds. Non-GMO, heirloom, open-pollinated. Suitable for growing in fields, garden plots, raised beds, and greenhouses. Tolerant of powdery mildew. Known...
Squash Seeds - Winter - Table Queen Acorn
80-85 days. Cucurbita pepo var. turbinata. Table Queen Acorn Winter Squash Seeds. Non-GMO, heirloom, open-pollinated. Also known as Des Moines Squash and Pepper Squash, Table Queen is the heirloom that...
Squash Seeds - Winter - Cushaw Green Striped
Cushaw Green Striped Squash Seeds. 95 to 105 Days. Winter Squash. Heirloom, Open Pollianted, Non-GMO. Cucurbita argyrosperma. AKA: Green Striped Cushaw Pumpkin, Sweet Potato Pumpkin, Improved Cushaw, Striped Crookneck. A...
Squash Seeds - Winter - Honeynut (Organic)
80-120 Days to maturity. Cucurbita moschata. Organic Honeynut Winter Squash Seeds. Non-GMO, open-pollinated, organic. Honeynut is a smaller, sweeter cousin of the butternut squash, bred for concentrated flavor and convenient...
Squash Seeds - Ebony Acorn
Cucurbita pepo (90 days) Ebony Acorn is a delicious dark acorn-type squash that is early and second only in flavor to Hubbard. Prolific 8' vines produce 1.5-2 pound fruits that...
Squash Seeds - Winter - Tahitian (Organic)
80-120 Days to maturity. Cucurbita moschata. Tahitian (Organic) winter squash seeds. Non-GMO, annual, perennial, organic, hybrid, open-pollinated, heirloom, AAS winner. Suitable for growing in fields, containers, garden plots, raised beds,...
[
{
"featured_image": "files/Squash_Winter_Waltham_Butternut_Squash.jpg",
"secondary_image": "products/Seed_Pouch_1_854f4c26-5080-47e1-80e5-4904ad98e11d.jpg",
"price": 299,
"handle": "squash-winter-waltham-butternut-seeds",
"title": "Squash Seeds - Winter - Waltham Butternut",
"url": "/products/squash-winter-waltham-butternut-seeds",
"available": true
},
{
"featured_image": "files/Squash-Seeds-Winter-Vegetable-Spaghetti-comp.jpg",
"secondary_image": "products/Seed_Pouch_1_02c7ab53-1c7c-482a-bf7d-41bc0996d9fb.jpg",
"price": 299,
"handle": "squash-winter-vegetable-spaghetti-seeds",
"title": "Squash Seeds - Winter - Vegetable Spaghetti",
"url": "/products/squash-winter-vegetable-spaghetti-seeds",
"available": true
},
{
"featured_image": "files/Squash-Seeds-Waltham-Butternut-Organic-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_5a63c6d0-b382-476e-891e-c479e1744702.jpg",
"price": 359,
"handle": "organic-waltham-butternut-squash",
"title": "Squash Seeds - Winter - Waltham Butternut (Organic)",
"url": "/products/organic-waltham-butternut-squash",
"available": true
},
{
"featured_image": "files/Squash-Seeds-Winter-Vegetable-Spaghetti-Organic-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_03c12710-729f-4de0-9a9d-485a2e984e53.jpg",
"price": 359,
"handle": "squash-winter-vegetable-spaghetti-organic-seeds",
"title": "Squash Seeds - Winter - Vegetable Spaghetti (Organic)",
"url": "/products/squash-winter-vegetable-spaghetti-organic-seeds",
"available": true
},
{
"featured_image": "files/squash-winter-table-queen-acorn-seeds-comp.jpg",
"secondary_image": "products/non-gmo-sprouting-seed_f6bdf435-ce87-4197-bcfc-04a804a51bb5.jpg",
"price": 299,
"handle": "squash-winter-table-queen-acorn-seeds",
"title": "Squash Seeds - Winter - Table Queen Acorn",
"url": "/products/squash-winter-table-queen-acorn-seeds",
"available": false
},
{
"featured_image": "files/squash-winter-burgess-buttercup-seeds-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_2_e386f93b-73c6-4490-a5ee-87448fb6d75e.png",
"price": 299,
"handle": "squash-winter-burgess-buttercup-seeds",
"title": "Squash Seeds - Winter - Burgess Buttercup",
"url": "/products/squash-winter-burgess-buttercup-seeds",
"available": true
},
{
"featured_image": "files/sweet-meat-squash_1222x1222_c1131e3b-aaba-47ab-8d49-b0fd87a5cea5.jpg",
"secondary_image": "products/Seed_Pouch_1_9d9c2089-aa0e-481a-9c6b-aa34fa70ff33.jpg",
"price": 299,
"handle": "squash-winter-sweet-meat-seeds",
"title": "Squash Seeds - Winter - Sweet Meat",
"url": "/products/squash-winter-sweet-meat-seeds",
"available": true
},
{
"featured_image": "files/squash-winter-delicata-seeds-wm_700_1222x1222_fd2f1a07-6e12-4a94-aba0-42e283b53421.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_1_442bdc2b-c81e-45d3-8cce-ec22a9702a3f.png",
"price": 199,
"handle": "squash-winter-delicata-seeds",
"title": "Squash Seeds - Winter - Delicata",
"url": "/products/squash-winter-delicata-seeds",
"available": true
},
{
"featured_image": "files/squash-winter-pink-banana-jumbo-seeds-comp.jpg",
"secondary_image": "products/Seed_Pouch_1_8f46a1d3-f904-4753-99a2-77beb1461a0f.jpg",
"price": 299,
"handle": "squash-winter-pink-banana-jumbo-seeds",
"title": "Squash Seeds - Winter - Pink Banana Jumbo",
"url": "/products/squash-winter-pink-banana-jumbo-seeds",
"available": true
},
{
"featured_image": "files/honeynut-squash-seeds-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-sus-wm-comp_1d897bca-ad1c-45d3-8e5b-8c5aabe43bdb.jpg",
"price": 439,
"handle": "honeynut-squash-seeds",
"title": "Squash Seeds - Honeynut",
"url": "/products/honeynut-squash-seeds",
"available": true
},
{
"featured_image": "files/squash-winter-blue-hubbard-seeds-Comp.jpg",
"secondary_image": "products/non-gmo-sprouting-seed_32a6160b-196f-4979-a99c-125b88eecdcd.jpg",
"price": 299,
"handle": "squash-winter-blue-hubbard-seeds",
"title": "Squash Seeds - Winter - Blue Hubbard",
"url": "/products/squash-winter-blue-hubbard-seeds",
"available": true
},
{
"featured_image": "files/Squash_Winter_Table_King_Bush_Acorn_Field_Comp.jpg",
"secondary_image": "files/Squash_Winter_Table_King_Bush_Acorn_Comp.jpg",
"price": 299,
"handle": "squash-winter-table-king-bush-acorn-seeds",
"title": "Squash Seeds - Winter - Table King Bush Acorn",
"url": "/products/squash-winter-table-king-bush-acorn-seeds",
"available": true
},
{
"featured_image": "files/japanese_red_kuri_squash_wm.jpg",
"secondary_image": "files/KZ_1_lb.jpg",
"price": 399,
"handle": "japanese-red-kuri-squash",
"title": "Squash Seeds - Winter - Japanese Red Kuri (Uchiki Kuri)",
"url": "/products/japanese-red-kuri-squash",
"available": true
},
{
"featured_image": "files/Squash_Winter_Sweet_Dumpling_Group_Comp.jpg",
"secondary_image": "files/Squash_Winter_Sweet_Dumpling_Comp.jpg",
"price": 339,
"handle": "squash-winter-sweet-dumpling-seeds",
"title": "Squash Seeds - Winter - Sweet Dumpling",
"url": "/products/squash-winter-sweet-dumpling-seeds",
"available": true
},
{
"featured_image": "files/organic-japanese-red-kuri-squash-seeds-Comp.jpg",
"secondary_image": "files/Japanese-Red-Kuri-Squash-plate-Comp.jpg",
"price": 399,
"handle": "organic-japanese-red-kuri-squash-seeds",
"title": "Squash Seeds - Japanese Red Kuri - Organic",
"url": "/products/organic-japanese-red-kuri-squash-seeds",
"available": true
},
{
"featured_image": "files/squash-seeds-japanese-winter-sweet-mama-hybrid-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-premium_85460892-3ced-41af-b3ca-f704b5bd01cd.png",
"price": 399,
"handle": "squash-seeds-japanese-winter-sweet-mama-hybrid",
"title": "Squash Seeds - Japanese, Winter - Sweet Mama - Hybrid",
"url": "/products/squash-seeds-japanese-winter-sweet-mama-hybrid",
"available": true
},
{
"featured_image": "files/squash-seeds-japanese-winter-hokkori-hybrid-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-premium_ad327639-8f81-43f8-94ac-7c61a53c859e.png",
"price": 399,
"handle": "squash-seeds-japanese-winter-hokkori-hybrid",
"title": "Squash Seeds - Japanese, Winter - Hokkori - Hybrid",
"url": "/products/squash-seeds-japanese-winter-hokkori-hybrid",
"available": true
},
{
"featured_image": "files/honeybaby-f1-squash-seeds-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-4-oz-sm_8d267b59-4912-43a5-b0df-cc070543b228.png",
"price": 439,
"handle": "honeybaby-f1-squash-seeds",
"title": "Squash Seeds - Winter - Honeybaby Hybrid",
"url": "/products/honeybaby-f1-squash-seeds",
"available": true
},
{
"featured_image": "files/1722361599_squash_winter_delicata_bush_comp_4f2df3b4-11b4-4d7e-8440-272321cc7e0f.jpg",
"secondary_image": "products/MVS-generic-packet-com_44575001-069f-451d-98df-41b8416f5a0c.jpg",
"price": 199,
"handle": "squash-seeds-winter-delicata-bush-aas",
"title": "Squash Seeds - Winter - Delicata Bush AAS",
"url": "/products/squash-seeds-winter-delicata-bush-aas",
"available": true
},
{
"featured_image": "files/organic-table-queen-bush-acorn-squash-seed-comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_762a1aca-9f41-4443-bcfb-a8f27755d1c2.jpg",
"price": 359,
"handle": "organic-table-queen-bush-acorn-squash-seed",
"title": "Squash Seeds - Table Queen Bush Acorn - Organic",
"url": "/products/organic-table-queen-bush-acorn-squash-seed",
"available": false
},
{
"featured_image": "files/Squash_Winter_Cushaw_Green_Striped_2_Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-1-oz-sm_1_1_14295846-e934-4ec8-9a10-a2782d7f6629.png",
"price": 299,
"handle": "squash-seeds-winter-cushaw-green-striped",
"title": "Squash Seeds - Winter - Cushaw Green Striped",
"url": "/products/squash-seeds-winter-cushaw-green-striped",
"available": false
},
{
"featured_image": "files/squash-seeds-winter-queensland-blue-Comp.jpg",
"secondary_image": "products/Seed_Packet_1_1_1_1_1_800c3d5e-43f2-46bb-bfa7-bbf54b1dfbb2.jpg",
"price": 379,
"handle": "squash-seeds-winter-queensland-blue",
"title": "Squash Seeds - Winter - Queensland Blue",
"url": "/products/squash-seeds-winter-queensland-blue",
"available": true
},
{
"featured_image": "files/organic-lakota-squash-com-wm_1222x1222_14074935-b13f-4da4-a83b-682b177277c4.jpg",
"secondary_image": "products/Seed_Packet_0434788c-ae78-4646-b675-6ac482141bb0.jpg",
"price": 309,
"handle": "lakota-squash",
"title": "Squash Seeds - Lakota",
"url": "/products/lakota-squash",
"available": true
},
{
"featured_image": "files/squash-seeds-japanese-winter-blue-kuri-comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-premium_6c4fb5fa-e64c-4c56-b472-d6bcec397eb2.png",
"price": 399,
"handle": "squash-seeds-japanese-winter-blue-kuri",
"title": "Squash Seeds - Japanese, Winter - Blue Kuri",
"url": "/products/squash-seeds-japanese-winter-blue-kuri",
"available": true
},
{
"featured_image": "files/asparagus-seeds-uc-157-f1-comp.jpg",
"secondary_image": "products/Seed_Packet_1_1_1_1_1_547ffb21-33ad-477c-ac74-bf16045a5cc1.jpg",
"price": 469,
"handle": "asparagus-seeds-uc-157-f1",
"title": "Asparagus Seeds - UC 157 F1",
"url": "/products/asparagus-seeds-uc-157-f1",
"available": true
},
{
"featured_image": "files/squash-seeds-winter-cushaw-orange-1-Comp.jpg",
"secondary_image": "products/MVS-generic-packet_1_d12466e9-a88e-4cdb-ab17-bfc2149863eb.jpg",
"price": 419,
"handle": "squash-seeds-winter-cushaw-orange-1",
"title": "Squash Seeds - Winter - Gold Nugget",
"url": "/products/squash-seeds-winter-cushaw-orange-1",
"available": true
},
{
"featured_image": "files/squash-winter-green-hubbard-seeds-Comp.jpg",
"secondary_image": "products/Seed_Pouch_1.jpg",
"price": 299,
"handle": "squash-winter-green-hubbard-seeds",
"title": "Squash Seeds - Winter - Green Hubbard",
"url": "/products/squash-winter-green-hubbard-seeds",
"available": true
},
{
"featured_image": "files/organic-honeynut-squash-org-com-wm_1222x1222_45f33baf-5a06-4afd-836f-f34570bf1c31.jpg",
"secondary_image": "products/non-gmo-seed-bag-com-sm_75ab1fc7-99f6-4246-92fb-05ec822bd7ef.jpg",
"price": 389,
"handle": "organic-honeynut-squash-seeds",
"title": "Squash Seeds - Winter - Honeynut (Organic)",
"url": "/products/organic-honeynut-squash-seeds",
"available": false
},
{
"featured_image": "files/ebony-acorn-squash-Comp.jpg",
"secondary_image": "products/non-gmo-seed-bag-4-oz-sm_427844d1-5274-42e7-8a9a-5b0bd86243e7.png",
"price": 299,
"handle": "ebony-acorn-squash",
"title": "Squash Seeds - Ebony Acorn",
"url": "/products/ebony-acorn-squash",
"available": false
},
{
"featured_image": "files/chirimen-squash-Comp.jpg",
"secondary_image": "products/Seed_Packet_41fb72cf-fe7b-45f2-abc6-ac0f07858893.jpg",
"price": 399,
"handle": "chirimen-squash",
"title": "Squash Seeds - Chirimen",
"url": "/products/chirimen-squash",
"available": true
},
{
"featured_image": "files/marina-di-chioggia-squash-comp.jpg",
"secondary_image": "products/Seed_Packet_1_d2ec7b54-f1da-4444-8490-1c03112ae77c.jpg",
"price": 339,
"handle": "marina-di-chioggia-squash",
"title": "Squash Seeds - Winter - Marina Di Chioggia",
"url": "/products/marina-di-chioggia-squash",
"available": true
},
{
"featured_image": "files/Squash-Seeds-Tahitian-Organic-Comp.jpg",
"secondary_image": "products/SSC-organic-generic-packet-com_c39e5ce8-935a-40b0-846c-e0bdf3ec5526.jpg",
"price": 479,
"handle": "organic-tahitian-squash-seeds",
"title": "Squash Seeds - Winter - Tahitian (Organic)",
"url": "/products/organic-tahitian-squash-seeds",
"available": false
}
]
