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Penstemon Barbatus Twizzle Scarlet
Bred to be first year flowering, yet still resembling the elegance of the wild penstemon. Tall stems covered in small scarlet, bell like flowers adding height to borders as they gently sway in the breeze, attracting beneficial insects. Flowers from summer through to autumn.
Height: 70-80cm (28-32in)
Half Hardy Perennial, but treat as Half Hardy Annual
Product Part Number: 70306
When to sow
When to Sow
February to April
June to September
Where to Sow
Sow seed onto the surface of pots or trays of moist seed compost and cover with a very fine sprinkling of compost or vermiculite. Place container in a propagator or a warm place at a temperature of 15-20C (59-68F). After sowing, do not exclude light as this helps germination, which can take 1-4 months.
When large enough to handle, transplant seedlings into pots or trays. Plant out once plants are well grown, 30cm (12in) apart in a well-drained soil in full sun or part shade.
What to do Next
Although Half Hardy , plants will often overwinter , to help with this always leave all the foliage on the plants through the winter , and cut back in April when new basal growth appears.