Ageratum houstonianum ‘Blue Horizon'
Tall growing with strong, sturdy stems and numerous branches
Blue Horizon is very vigorous and easy to cultivate, having larger flowers than traditional Ageratums and also superb as a garden plant. Height about 75 cm (30 inches) with a spread of about 20 cm (8 inches)
When to sow: Spring/early summer
Where to sow: Indoors or direct sow
Depth to sow: 5mm
Aspect: Full sun or as sunny a spot as possible.
Soil: Prepared, well drained, fertilised soil. Add lime if soil is too acid.
Spacing: Between plants: 15cm-90cm; Between rows: 90cm
Directions: Sow indoors early to mid-spring for planting when weather warms up. Direct sow mid-November until late December. Height 70-80cm space 30-40cm.
Packet 30 seeds