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Mammoth Grey-Stripe sunflower seeds are a high-yielding, cold-hardy variety suitable for home gardens and commercial cultivation. They grow to 6-12 feet tall with flower heads up to 12 inches in diameter, displaying beautiful grey stripes. They are easy to care for, adaptable to various soil types, and thrive in full sun.
Mammoth Grey-Stripe Sunflower Seeds Product Description
Mammoth Grey-Stripe sunflower seeds are an ideal choice for all types of gardeners. This sunflower grows quickly and performs best in full sun. Reaching heights of 6-12 feet, they are suitable as background plants or for planting individually. The flower heads can reach up to 12 inches in diameter, showcasing stunning beauty. The large, plump seeds are suitable for birds and other wildlife. They create a spectacular visual effect in the garden and are suitable for cut flowers and decorations.
Mammoth Grey-Stripe Sunflower Seeds
Name: Mammoth Grey-Stripe
Variety: Sunflower
Planting Time: Spring
Temperature: 70°F - 85°F (approximately 21°C - 30°C)
Planting Depth: 1-2 inch
Water: Moderate
Light: Full sun
Germination Time: 7 - 10 days
Maturity: Approximately 70-90 days
Life Cycle: Annual
Plant Height (inches): 72-144 inches
Plant Resistance: Disease and pest resistant
Hardiness Zones (USDA): 3 - 10
Uses: Ornamental, Edible
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Ⅰ.Order Cancellation
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Cancellation Deadline: If you need to cancel your order after successfully placing it, you must send us an email request within 24 hours of placing the order. Requests received after this period will not be processed.
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Application Method: Please send your order cancellation request to our official customer service email (support@zestseeds.com). The email subject must state “Order Cancellation Request + Order Number.” The email body should include your name, contact information, order number, and the reason for cancellation to help us verify and process your request quickly.
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Refund Information: Once your cancellation request is approved, we will process your refund within 1-3 business days. The refund amount will be fully returned to your payment account. The specific time for the funds to arrive depends on the payment platform and bank processing times, so please keep an eye on your account activity.
Ⅱ.Preparation Time
After you successfully place your order, we will complete preparation and warehouse review within 1-3 business days. To ensure the quality of the seeds, we conduct strict packaging inspections on each batch of seeds to ensure they are dry and undamaged before handing them over to our logistics partners for shipment.
Note: If your order contains multiple types of seeds or if there are holidays or peak order periods, the preparation time may be extended by 1-2 business days. We will inform you in advance on the order page or via email.
Ⅲ.Logistics Shipping Times
| Region | Estimated Transit Time |
| United States | 7-12 Business Days |
| Canada | 8-13 Business Days |
Ⅳ.Customer Service Contact Information
If you have any questions regarding shipping-related matters, please contact us through the following methods:
- Email: support@zestseeds.com
- Working Hours: Monday to Friday, 9:00 AM - 6:00 PM
The final interpretation of this shipping policy belongs to Zestseeds. If there are any adjustments, we will announce them in advance on our website. Thank you for your understanding and support, and happy planting!
