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The Ageratum houstonianum 'Timeless' mix is an excellent choice for home gardeners seeking long-lasting, pollinator-friendly blooms in violet, purple, and yellow. It is perfect for adding texture to cottage gardens, wildlife areas, or filling gaps in established borders, though it requires careful temperature control during initial germination and a frost-free environment before moving outdoors.
| Model Part Number | 60293 |
|---|---|
| Brand | Thompson & Morgan |
Sow the seeds indoors from late winter to mid-spring for the best results.
Yes, for optimal bloom density, Ageratum houstonianum should be placed in a position of full sun.
Space your seedlings 15-30cm (6-12 inches) apart to allow for proper airflow and root development.
Yes, the Ageratum 'Timeless' variety is specifically known for attracting pollinating insects to the garden.
Once fully established, these plants reach a height of up to 50cm (19.7 inches).
No, these are sensitive to cold and should only be planted outdoors once all risk of frost has passed.
Ensure temperatures are consistently within the 15-18°C range and verify that seeds have not been buried too deep, as they require light.
Ensure a proper 7-10 day hardening-off period in cooler conditions before moving to full sun, and verify the soil remains moist.
For the best results, start seeds indoors in late winter or mid-spring. Keep the ambient temperature between 15-18°C (59-64°F) and ensure the surface-sown seeds receive adequate light for germination, which typically occurs within 10-15 days. Before transplanting outside, seedlings must be acclimatized over a 7-10 day period to prevent shock. Once established in the ground, space plants 15-30cm apart. Maintain soil moisture throughout the peak summer months, especially during dry spells, to prevent the foliage from wilting.
