Pelargonium crispum – Lemon-Scented Geranium

This zingy little plant is a joy for the senses – its tightly crinkled green leaves release a bright lemon scent when touched. Compact and easy to grow, Pelargonium crispum adds a burst of freshness to sunny indoor spaces and is perfect for pinching and brushing past on a windowsill or kitchen shelf.

Scientific Name
Pelargonium crispum (crinkled-leaf pelargonium)

Any reclassifications, history about the origins, discovery or botanist who named it
The species was first described by Carl Linnaeus and later clarified by Charles L’Héritier. The name crispum refers to the crisped or tightly curled edges of the leaves.

Synonyms
None widely used, though sometimes referred to as Lemon Geranium

Common Name(s)
Lemon-Scented Geranium, Crinkle-Leaf Pelargonium, Lemon Geranium

Origin
Native to South Africa – particularly the Western Cape

Light
Loves a sunny position – full sun or bright indirect light. A south-facing windowsill is ideal. Too little light can reduce fragrance and cause leggy growth.

Water
Allow the top few centimetres of soil to dry out between waterings. Water less in winter, and avoid letting the plant sit in soggy soil.

Humidity
Tolerates normal household humidity well. Prefers good airflow and slightly drier air, mimicking its native environment.

Soil
Free-draining soil is key – a loam-based or multipurpose compost with added grit or sand works well. Use a pot with drainage holes to prevent root rot.

Food
Feed every 2–3 weeks from spring to early autumn with a balanced fertiliser or tomato feed. No need to feed in winter.

Temperature
Best kept between 15–25°C. Can tolerate slightly cooler nights but must be kept frost-free. Move indoors well before autumn frosts if summered outside.

Pet-safe
Toxic if ingested – keep away from pets and children

Sprouts Top Tips
Prune regularly to encourage bushier growth and more fragrant leaves – it’s a great excuse to enjoy the scent!

Extras
This variety is sometimes used in herbal teas, desserts, or potpourri – but always verify safety before using in the kitchen.

Did You Know?
Lemon-scented pelargoniums were once used in Victorian posies and nosegays to help mask unpleasant city smells and refresh the senses.