Pelargonium x hortorum (Geranium, Zonal Geranium)

Botanical Information

FamilyGeraniaceae
GenusPelargonium
Speciesx hortorum
CategoryAnnuals
TypeVine

Details

USDA Hardiness Zone10 - 11
USDA Hardiness Ref.
Canadian Hardiness Zone8a (Requires cool season protection under glass.)
Canada Hardiness Ref.
RHS Hardiness ZoneH1c - H3
RHS Hardiness Ref.
Temperature (°C)-1 - 10
Temperature (°F)30 - 50
Height30 - 90 cm
Spread30 - 90 cm
GrowthFast
Flowering PeriodJune, July, August, September, October

Description and Growing Information

LandscapeGroup or mass in beds and borders. Edging along walks or paths. Containers, hanging baskets or window boxes.
PropagationUsually by stem cuttings but also via seed.
CultivationGrow in average to organically rich, medium moisture, well-drained soils with a neutral to slightly alkaline pH. Water regularly throughout growing season. Best in full sun, but appreciates some light shade in the heat of the day.
Bark/Stem DescriptionBrittle, trailing stems that spread to as much as 90 cm wide.
Leaf DescriptionThick, lobed, medium green, ivy-like leaves.
Flower DescriptionClusters of single or double flowers in shades of red, pink, lilac or white.

Photographs