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B&Q£4.99Visit shop B&Q - Heteropappus Meyendorfii Blue Knoll 1 Seed Packet (50 Seeds)
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The Thompson & Morgan Heteropappus meyendorfii 'Blue Knoll' is an ideal choice for gardeners looking to extend the floral season well into late autumn when most other plants have faded. These half-hardy perennials offer a stunning display of blue, chrysanthemum-like flowers that form compact, rounded mounds, making them perfect for containers and garden borders. While they provide exceptional late-season color, users should note that they require careful temperature management during the early germination stage and must be protected from frost.
| Model Part Number | 26154 |
|---|---|
| Brand | Thompson & Morgan |
You can sow between January and February for an autumn bloom that same year, or in September/October for a bloom in the following autumn.
No, do not cover them completely. Use only a light sprinkle of vermiculite, as the seeds require light to germinate.
They are half-hardy perennials, meaning they should be planted outdoors only after the risk of frost has passed.
You should plant them 30cm (12in) apart to ensure they have enough room to reach their 45cm spread.
Yes, 'Blue Knoll' is excellent for containers due to its compact, mounding growth habit.
Under ideal conditions (18-20C), germination usually occurs within 10 to 21 days.
Ensure seeds were not covered too deeply with compost and check that the temperature remains consistently between 18-20C.
Increase light exposure and ensure the plants are kept in cooler conditions after the initial germination period.
Ensure a proper 10-15 day hardening-off period in cooler conditions before placing them into the garden.
For successful cultivation, use free-draining, damp seed compost. Sow seeds on the surface and use only a light sprinkle of vermiculite, as the seeds need light to germinate. Maintain a steady temperature of 18-20C (64-68F) using a propagator or a sealed plastic bag to retain humidity. Germination usually takes 10-21 days. Once seedlings are large enough, move them to 7.5cm pots and acclimate them to cooler conditions for 10-15 days before transitioning them outdoors. Ensure they are planted in their final position only after all risk of frost has passed, spaced at 30cm intervals.
