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Blue Dwarf Ageratum Seeds – Ageratum houstonianum 'Blue Hawaii' – Vibrant Periwinkle Floss Flowers for Borders & Containers.
💜 Add a Cool, Soothing Pop of Blue to Your Garden
This Blue Dwarf Ageratum is a garden classic for a reason. Each bloom forms a textured, fringed pom-pom in an intense shade of periwinkle blue that contrasts beautifully with green foliage and warm-colored flowers like marigolds or zinnias. The compact size makes it extremely versatile – use it to edge walkways, fill in gaps in perennial beds, or plant in hanging baskets and patio containers for months of continuous color.
🌱How to Plant & Grow
- Light Requirements: Full sun to partial shade (4–6 hours of direct sun per day preferred, but tolerates light shade).
- Soil Type: Well-drained, moderately fertile garden soil. Do not plant in heavy clay or standing water.
- Germination Time: 7–14 days at 70–75°F (21–24°C). Do not cover seeds – they require light to germinate.
- Days to Maturity: 60–75 days from seed to first bloom.
- Mature Height: 8–10 inches. Spread: 6–8 inches.
📏Spacing & Seeding Instructions
- Plant Spacing: When transplanting seedlings, space them 6 to 8 inches apart for a dense, carpet-like effect. For larger, individual plants, space 10 inches apart.
- Seed Density (Per Linear Foot): For a continuous border row, sow 8–10 seeds per linear foot. For mass planting in beds or containers, sow 12–15 seeds per square foot.
- Sowing Depth: Surface sow. Press seeds gently into the soil but do not cover with soil.
📅 Growing Calendar
|
Stage |
Northern States(3–5) |
Mid-Atlantic(6–7) |
Southern States(8–10) |
|
Sow Indoors |
Late March – Early April |
Early – Mid March |
Late January – Mid February |
|
Transplant Outdoors |
Late May – Early June |
Early – Mid May |
Late March – Early April |
|
Direct Sow (after frost) |
Mid – Late June |
Mid – Late May |
Early – Mid April |
Important: Ageratum is extremely frost-sensitive. Do not transplant or direct sow until all danger of frost has passed and soil temperature has reached at least 60°F (15°C).
🧑🌾 Step-by-Step Planting Instructions
Start Indoors (Best for Northern & Mid-Atlantic Zones):
- Fill a seed tray with moist, high-quality seed-starting mix.
- Sprinkle seeds evenly on top of the soil. Do not cover.
- Mist lightly with a spray bottle. Cover the tray with a clear plastic dome or plastic wrap to retain moisture.
- Place in a warm location (70–75°F) with bright, indirect light.
- Remove plastic once seedlings emerge (7–14 days). Keep soil consistently moist. After the last frost date, harden off seedlings over 5–7 days before transplanting outdoors.
Direct Sow (Best for Southern Zones 8–10):
- Wait until soil temperature reaches 60°F (15°C) and all frost danger has passed.
- Prepare a weed-free garden bed with loose, well-drained soil.
- Scatter seeds on the surface. Press down gently with your hand or a flat board. Water carefully with a fine spray (avoid washing away seeds).
- After 3–4 weeks, thin seedlings to 6–8 inches apart.
Ongoing Care:
- Watering: Keep soil evenly moist but not soggy. During hot dry periods (e.g., Texas, California, Arizona), water twice per week.
- Fertilizing: Apply a balanced liquid fertilizer (10-10-10) once every 4–6 weeks during the growing season.
- Deadheading: Remove spent blooms promptly to encourage continuous flowering through October.
- Overwintering: In zones 9–10, Ageratum may survive as a short-lived perennial. In all other zones, treat as an annual.
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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!
