Annuals
Pelargonium x hortorum, Rocky Mountain Series
Rocky Mountain™ zonal geranium
Large, rounded flower clusters top vigorous plants bred for strong summer performance. Rocky Mountain geraniums fill larger containers and seasonal beds. This series includes several colors; regular removal of faded clusters keeps the display tidy.
At a glance
- Sun
- Full sun to part sun
- Mature size
- 14–18 in. (series range) tall × 16–20 in. (series range) wide
- Water
- Regular moisture; well-drained soil
- Bloom
- Spring through summer
Sizes & prices
- 14"$29.99
Catalog updated September 8, 2026. This is not a live stock count; please call to confirm availability and price.
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Resistance & tolerances
- Drought
- Tolerant once established; containers still need watering.
- Wet soil
- Needs good drainage; avoid standing water.
- Heat
- Tolerant.
Pollinators & wildlife
- Attracts
- Butterflies
Pet safety
- Cats & dogs
- Toxic if eaten. Keep plants and trimmings out of reach.
If a pet eats a potentially toxic plant, contact your veterinarian promptly.
Growing & care
- Pruning
- Remove faded flower clusters and trim leggy shoots to keep plants tidy.
- Size & habit
- Series reference: about 14–16 in. tall and wide. Individual colors differ.
Sources & photo credits
Photo: Photo by David J. Stang · CC BY-SA 4.0
Size & selection: The breeder’s series guide gives about 14–16 in. tall and wide. Individual colors can differ; use the supplied color’s garden dimensions when planning a container or border.
Reviewed September 22, 2026. Growing conditions vary by location.