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Annual · Geraniaceae family
Pelargonium × hortorum
Where to plant and how much to water
It grows best in full sun to part shade, in average soil.
How much space it takes
The mature plant next to a person (69 in).
Plant 13¾ in apart.
The final size depends on the cultivar and the spot — we give the range from smallest to largest.
Calendar
Typical for a temperate climate (four seasons). The line shows the current month.
May–October · red, purple, pink, orange or white
sow indoors: January–February
transplant outdoors: May
April–May
pinch out the tips (March–June)
Feeding
up to 0.29 oz/sq ft a year, if the soil needs it · April–May
Pests and diseases
The most common problems in Central Europe. Protection is listed from the gentlest option.
Fuzzy gray-brown mold on dying buds, leaves, flowers and fruit.
The source says: under glass it is among the crops highly susceptible to gray mold.
Fuzzy gray-brown mold on dying buds, leaves, flowers and fruit.
The source says: under glass it is among the crops highly susceptible to gray mold.
Small yellow spots and dark brown pustules on the leaves of zonal pelargoniums.
Small yellow spots and dark brown pustules on the leaves of zonal pelargoniums.
Silvery speckling of leaves and flowers.
Silvery speckling of leaves and flowers.
Adults notch the leaf edges; white larvae eat the roots, mainly in containers, and the plant wilts.
Adults notch the leaf edges; white larvae eat the roots, mainly in containers, and the plant wilts.
Tiny white winged insects, sticky honeydew and sooty mold.
Tiny white winged insects, sticky honeydew and sooty mold.
What to combine it with
They share the same sun and soil and flower in other months — so the bed flowers for longer.
Frequently asked
In May–October; the flowers are red, purple, pink, orange or white.
In January–February (sow indoors).
It tolerates part shade (3–6 hours of sun), but not full shade.
At maturity 11¾ in–2 ft 11⅜ in wide and 11¾ in–2 ft 11⅜ in tall; recommended spacing 13¾ in.
Check new plants; the fungus can be in a leaf for about 2 weeks without symptoms, so isolate new plants for at least 2 weeks. Remove affected leaves and plants.
Outdoors, plants usually survive even with silvery speckling; encourage natural enemies. Predatory bug Orius laevigatus and mites (mainly in the greenhouse).
Similar plants
Geranium sanguineum
Aquilegia vulgaris
Uses
