Canna 'Pretoria' (Pretoria Canna )


Botanical Information

FamilyCannaceae
GenusCanna
Cultivar'Pretoria'
SynonymsStriata
CategoryAnnuals, Bulbs, Tropicals

Details

USDA Hardiness Zone7 - 10
USDA Hardiness Ref.
Canadian Hardiness ZoneH2 - H5
Canada Hardiness Ref.
RHS Hardiness Zone6b - Requires cool season protection under glass
RHS Hardiness Ref.
Temperature (°C)-15 - 4
Temperature (°F)0 - 40
Height1 - 2m
Spread0.5 - 1m
GrowthMedium
Flowering PeriodJune, July, August, September

Description and Growing Information

PropagationDivision.
CultivationVery high moisture needs; do not let dry out between watering. Suitable for bogs and water gardens. Plant outside in early summer in a sheltered location in full sun. Keep soil wet in dry weather. Benefits from a monthly application of high potassium fertilizer. When frost blackens the foliage in autumn, lift the rhizomes; over winter store frost-free in barely moist peat-free soil or leaf mold. In milder conditions, leave in the ground and cover with dry mulch.
PestsLeaf spots, rust and bacterial blight may occur. Aster yellows. Japanese beetles, caterpillars, slugs and snails.
HabitatHorticultural origin.
Leaf DescriptionMild green with yellow veins running throughout the leaf.
Flower DescriptionBright yellow petals with streaks of orange across the surface, connected to purple stems.

Photographs