When to Plant Cosmos in Unknown

State

Unknown

Cities Covered

USDA Zones

5a, 7a, 7b, 8b, 9a, 9b

Plant Type

Direct Sow

📅 Planting Calendar for Unknown

Based on ZIP 32143 (Zone 9b). Dates may vary by city.

Direct Sow Outdoors Tuesday, February 10, 2026

Note: Unknown spans multiple zones (5a, 7a, 7b, 8b, 9a, 9b). Select your city below for more precise dates.

🌿 Plant Details

Scientific Name Cosmos bipinnatus

Days to Maturity 60 days

Sun Requirements Full Sun (6-8 hours)

Plant Spacing 18" apart

Find Your City in Unknown

ZIP 32143 (Zone 9b) ZIP 40122 (Zone 7a) ZIP 50099 (Zone 5a) ZIP 75033 (Zone 8b) ZIP 75059 (Zone 8b) ZIP 84129 (Zone 7b) ZIP 85117 (Zone 9b) ZIP 85127 (Zone 9b) ZIP 85178 (Zone 9b) ZIP 85190 (Zone 9b) ZIP 85191 (Zone 9a) ZIP 85288 (Zone 9b) ZIP 93737 (Zone 9b)

Other Plants for Unknown

Blackberry Blueberry Raspberry Strawberry Basil Chamomile Chives Cilantro Dill Lavender Lemon Balm Marjoram Mint Oregano Parsley Rosemary Sage Tarragon Thyme Acorn Squash Artichoke Arugula Asparagus Beefsteak Tomato Beet Bell Pepper Bok Choy Broccoli Brussels Sprout Butternut Squash Cabbage Cantaloupe Carrot Cauliflower Cayenne Pepper Celery Cherry Tomato Chili Pepper Collard Green Common Bean Cucumber Eggplant Endive Fennel Garlic Grape Tomato Green Bean Habanero Pepper Head Lettuce Heirloom Tomato Honeydew Melon Jalapeño Pepper Kale Kohlrabi Leaf Lettuce Leek Lima Bean Mustard Okra Onion Parsnip Pea Poblano Pepper Pole Pea Potato Pumpkin Radicchio Radish Rhubarb Roma Tomato Rutabaga Serrano Pepper Shallot Snap Pea Snow Pea Spaghetti Squash Spinach Squash Sweet Corn Sweet Potato Swiss Chard Tomato Turnip Watermelon Zucchini Sunflower Marigold Zinnia Nasturtium Echinacea (Coneflower) Petunia Black-eyed Susan Apple Tree Pear Tree Peach Tree Plum Tree Sweet Cherry Tree Lemon Tree Borage Lemongrass Ginger Stevia Tomatillo Edamame Fava Bean Mâche Mizuna Sorrel Shishito Pepper Banana Pepper Watermelon Radish Napa Cabbage Popcorn Broccoli Raab Catnip Valerian Lemon Verbena Bee Balm Anise Lovage Chervil Summer Savory Dahlia Snapdragon Pansy Sweet Pea Morning Glory Hollyhock Larkspur Bachelor Button Columbine Impatiens Salvia (Annual) Sweet Alyssum Celosia Lupine Verbena Elderberry Grape Vine Red Currant Gooseberry Serviceberry Fig Tree Avocado Tree Persimmon Tree Olive Tree

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Growing Cosmos in Unknown

Cosmos (Cosmos bipinnatus) is a popular garden vegetable in Unknown. The state spans USDA Hardiness Zones 5a, 7a, 7b, 8b, 9a, 9b, so planting dates can vary significantly depending on your location.

In most areas of Unknown, you can direct sow Cosmos outdoors around Tuesday, February 10, 2026.

For the most accurate planting dates, enter your ZIP code on our homepage or select your city from the list above.