Growing and Caring for Fragrant Scented-Leaved Geraniums
Scented-leaved geraniums, also known as Pelargoniums, are a diverse group of fragrant plants prized for their aromatic leaves and attractive flowers. With proper care and maintenance, these versatile plants can enhance any garden or indoor space.
Types of Scented-Leaved Geraniums
There are numerous varieties of scented-leaved geraniums, each with its own distinctive fragrance and appearance. Some popular types include:
- Apple-scented geranium (Pelargonium odoratissimum): Crisp apple scent with small white flowers
- Chocolate mint geranium (Pelargonium tomentosum): Rich chocolate and mint aroma with round leaves
- Mosquito plant (Pelargonium citrosa): Strong citronella scent, although not highly effective as a mosquito repellent
- Variegated rose geranium (Pelargonium graveolens ‘Variegata’): Rose fragrance with silver-edged, lacy leaves
Care and Maintenance
Light: Scented-leaved geraniums prefer full sun or partial shade. In very warm climates, afternoon shade may be beneficial to prevent leggy growth.
Soil: The soil should be well-draining and not overly rich. Rich soil can diminish the fragrance of the leaves. Scented geraniums tolerate most soil pH levels, but a slightly acidic pH of around 5.8 to 6.3 is ideal.
Water: These plants are drought tolerant and do not tolerate sitting in wet soil. Water only when the soil feels dry about an inch below the surface.
Temperature and Humidity: Scented geraniums are perennial in tropical climates and thrive in hot, humid conditions. They also perform well in dry climates and can survive short periods of light frost.
Fertilizer: Go easy on the fertilizer to maintain the plant’s fragrance. Potted plants may require more frequent fertilization with a balanced, diluted fertilizer during the spring and summer.
Pruning and Propagation
Pruning: Occasional pinching and light pruning will promote bushier growth. Prune large plants back to shape in the spring or as needed during the season. Deadhead spent flowers to encourage new blooms.
Propagation: Most scented-leaved geraniums are hybrids and should be purchased as nursery plants. However, some varieties can be propagated from seed or root cuttings:
- Seed: Sow seeds indoors in December and transplant seedlings outside after the last frost.
- Root cuttings: Take 6-inch cuttings, remove lower leaves, and root in moist vermiculite.
Growing from Seed
Best Time: Start seeds indoors in December.
Method: Spread seeds across a tray filled with seed-starting medium and cover with 1/8 inch of soil. Keep the soil moist and provide bright light. Thin seedlings as needed. Transplant outdoors after the last frost.
Potting and Repotting
Scented-leaved geraniums grow quickly and prefer to be slightly rootbound. When repotting, choose a container only slightly larger than the previous one. An 8-inch pot is suitable for most average-sized plants.
Overwintering
Cold Climates: Bring potted plants indoors in the fall and treat as houseplants, providing plenty of bright light. Alternatively, store plants in a cool, dark place, allowing them to go dormant.
Mild Climates: Scented-leaved geraniums can overwinter outdoors in areas with mild winters. Mulch around the base of the plant for protection.
Encouraging Blooms
Sunlight: Ensure the plant receives ample sunlight for optimal flowering.
Water: Water regularly, especially during hot, dry weather.
Deadheading: Remove spent blooms to promote new flower production.
Troubleshooting Common Problems
Leggy Growth: Insufficient sunlight. Move the plant to a sunnier location.
Yellowing Leaves: Overwatering. Reduce watering frequency and ensure the soil drains well.
Leaves Falling Off: Overwatering or root rot. Cut back on watering and inspect the roots for signs of rot.
FAQ
How long do scented-leaved geraniums live?
They can live for several years in mild climates or as houseplants, but typically die after one season in cold climates.
Are they good for hanging baskets?
Yes, many varieties have a trailing habit and look attractive spilling over the edge of a hanging basket.
Can I use them to make potpourri?
Yes, dry the leaves and crumble them into a mixture with other dried flower petals for a fragrant potpourri.