Lemon Scented Geranium
Pelargonium crispum, the Lemon Scented Geranium, is cherished for its strongly fragrant, lemony foliage and dainty flowers. With its crinkled, bright green leaves and neat growth habit, it is ideal for containers, herb gardens, and sunny windowsills. Its aromatic leaves release scent when brushed, making it a favourite for scented plant collections.
Read MorePlant Care Essentials:
Plant Profile:
- Scientific Name: Pelargonium crispum
- Size: 30–60cm tall
- Plant Family: Geraniaceae
- Temperature Tolerance: Minimum 5–7°C
- Drought Tolerant: Yes
- Plant Type: Ornamental herb
- Light Requirements: Full sun to bright light
- Fruits: No
- Tropical: No
- Indoor: Yes
- Flower Color: Pale pink to lilac with darker markings
- Plant Origin: South Africa
- Growth Rate: Moderate
- Flowering Season: Late spring to summer
- Edible Fruit: No
Care Instructions:
A compact, upright pelargonium with small, crisped leaves, this species is grown primarily for its fragrance rather than its blooms. It thrives in warm, bright conditions and performs well both indoors and outdoors in summer. Its aromatic oils intensify in full sun, and the plant remains manageable with occasional pruning to encourage bushy growth.
Light
Provide full sun for the best fragrance and dense growth. Indoors, place it at a south- or west-facing window where it receives ample brightness. Insufficient light leads to elongated stems and a weaker scent. Outdoors, choose a spot with at least six hours of direct light.
Water
Water moderately, allowing the top few centimeters of soil to dry between waterings. This plant dislikes waterlogging and is prone to root issues if kept constantly wet. During hot summer days, water more frequently, but reduce watering in winter when growth slows.
Soil
Use a light, well-drained potting mix with added grit or coarse sand. A slightly alkaline soil suits it well. Avoid heavy, compact soils that hold excess moisture. Good drainage is essential, particularly when grown in containers.
Temperature
Keep between 10–24°C. Protect from frost, as the plant is tender and will not survive freezing temperatures. High heat is tolerated if the soil is not kept too wet. Indoors, avoid placing it near radiators or hot drafts.
Humidity
This plant prefers low to moderate humidity. Excess humidity can encourage fungal issues. Ensure good air circulation around the leaves to maintain plant health.
Fertilizer
Feed lightly every two to three weeks in spring and summer with a balanced or slightly phosphorus-rich liquid fertilizer. Avoid overfeeding, which can diminish leaf fragrance and encourage lush but weak growth.
Best Placement Ideas
- Sunny kitchen windowsill for easy access to fragrant leaves
- Patio containers in warm weather
- Herb or scented garden beds
- Bright conservatories or sunrooms
Common Issues
- Leggy growth from insufficient light
- Yellowing leaves from overwatering
- Root rot caused by waterlogged soil
- Aphids or whitefly in indoor settings
Things to Watch Out For
- Cold drafts and frost exposure
- Poor scent intensity in low light
- Fungal spots from high humidity
- Rapid stem elongation if unpruned
Propagation Tips
Take softwood or semi-ripe cuttings in spring or early summer. Remove lower leaves and insert the cuttings into a gritty, well-drained compost. Keep slightly moist but not wet. Rooting is usually fast in warm, bright conditions. Once established, transplant into small pots and acclimate gradually to full sun.
Maintenance Tips
Pinch back tips regularly to maintain a compact shape and encourage fuller growth. Prune lightly after flowering or midsummer to refresh the plant. Repot annually in spring with fresh, well-drained soil. Protect from frost and reduce watering during winter dormancy.
Did You Know? 
The leaves of Pelargonium crispum have been used traditionally to scent linens and potpourri due to their long-lasting citrus aroma.
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