Zonal Geranium
Pelargonium x hortorum
The Zonal Geranium is a timeless horticultural staple, adored for its robust clusters of vibrant blossoms and uniquely patterned, scalloped leaves. These plants are known for their distinct 'zones' of darker color on the foliage and a pungent, herbaceous scent when touched. They serve as excellent focal points in containers, hanging baskets, and garden beds, offering a continuous display of color from spring through the first frost.
Light
Full Sun
Water
Moderate
Difficulty
Easy
Humidity
Low
Pet Warning
Pelargonium species contain geraniol and linalool. If ingested by cats or dogs, it can cause vomiting, depression, ataxia, and skin irritation (dermatitis).
Care Guide
Lighting
Place in a location that receives at least 6 to 8 hours of direct sunlight daily. Inadequate light will result in leggy growth and fewer blooms.
Watering
Allow the top inch of soil to dry out between waterings. Water deeply at the base of the plant to keep the foliage dry, which prevents fungal diseases like botrytis.
Pruning and Deadheading
Regularly remove faded flower stalks by snapping them off at the base to stimulate new bud production. Pinch back stems in early summer to encourage a bushier, more compact growth habit.
Overwintering
In frost-prone areas, bring the plant indoors before the first freeze. Store in a cool, bright spot and reduce watering significantly until spring growth resumes.
In-Depth Care & Growth
Feeding & Soil
Fertilizer
Balanced water-soluble fertilizer (20-20-20) or high-phosphorus bloom booster.
Soil
Well-draining, slightly acidic potting soil with a pH between 6.0 and 6.5.
Physical Attributes
Mature Size
1-2 feet tall and wide
Growth Rate
Fast
Propagation
Stem cuttings are the most common and effective method; can also be grown from seed.
Common Varieties
Maverick Red
The Maverick Red Zonal Geranium is characterized by its rounded, scalloped deep-green foliage distinguished by a prominent, dark-pigmented circular zone.
Rocky Mountain White
The 'Rocky Mountain White' Zonal Geranium features rounded, lobed medium-green leaves marked with a subtle, dark concentric zone.
Black Velvet Rose
The 'Black Velvet Rose' Zonal Geranium is distinguished by its rounded, lobed foliage featuring dramatic, near-black chocolate centers framed by a thin, vibrant green margin.
Pinto Premium Series
The Pinto Premium Series is characterized by rounded, scalloped green leaves that feature a bold, high-contrast dark concentric ring known as a "zone.