Pelargoniums can be grown in borders or containers. In borders or beds, plant in fertile, neutral to alkaline soil. Most prefer full sun. Regal cultivars prefer partial shade and zonal cultivars will tolerate some shade.
For indoor or outdoor container cultivation use well drained soil-less multipurpose compost or soil-based compost such as John Innes No 2.
If growing indoors or under glass grow in full light shaded from scorching midday sun.
Watering and feeding
Water moderately during the growing season from spring to summer, avoid the compost becoming too wet and provide good ventilation. Apply a balanced liquid fertiliser according to the application instructions on the packet, every 10-14 days in spring. Once flowers start to form, switch to a high potassium fertiliser such as tomato feed. Water only sparingly in winter. Many will continue flowering if kept at 7-10°C (45-50°F).