Botanical name: Dahlia imperialis
Plant type: Herbaceous perennial.
Size: Left unchecked they'll grow to the height of a tree (4-6m) or, if you cut them off late in the year they will re-sprout and flower at a more modest 2m tall. 1m wide.
Planting depth & spacing: Plant with the crown at the soil surface and up to 1m apart.
Preferred aspect: Full/part sun.
Soil type: Rich and well drained
Watering: Keep well watered while actively growing.
Fertilising: Top dress annually in Spring with a general fertiliser.
Flowers: Late Autumn-Winter.
Pruning required: Cut back severely in Winter or spring so that new growth sprouts from near ground level.
Climate: Cool to temperate.
Last Reviewed: 13/02/2004 11:30:43 AM Keywords: Tree Dahlia, plant care, garden care, garden tip, plant guide, garden guide, perennial, flower bulb, spring bulb