Penstemon - Giant Hybrids
This is a semi-dwarf rockery or border plant with beautiful trumpet-shaped flowers.
Sow the seeds from February to March in pots or trays under glass at 18°C. Lightly cover with fine compost. When the seedlings are large enough to handle, prick off into trays spacing 5cm apart. Grow on and gradually harden off for planting outside form late May. Space 15cm apart. Flowers from June to August.