Florist Guide to Geranium

Geraniums are popular flowering plants known for their vibrant colours and distinctive scents. They belong to the genus Pelargonium, which is often confused with true geraniums from the genus Geranium. This florist guide covers the essential aspects of geranium care, types, and uses in floristry.

Types of Geraniums

1. Zonal Geraniums
   Characterised by their circular leaf markings, zonal geraniums are among the most common types grown for ornamental purposes. They bloom in various colours, including shades of red, pink, and white.

2. Ivy-Leaved Geraniums
   These geraniums have trailing stems and delicate ivy-like leaves, making them ideal for hanging baskets and window boxes. They produce an abundance of flowers throughout the season.

3. Scented Geraniums
   Renowned for their aromatic foliage, scented geraniums offer delightful fragrances ranging from rose to lemon. While not as showy in flower, their leaves are often used in culinary applications and potpourris.

4. Regal Geraniums
   Known for their elaborate blooms and velvet-like textures, regal geraniums add a touch of elegance to floral arrangements. They thrive in cooler conditions and require careful management.

Growing Conditions

• Light: Geraniums prefer full sun conditions, requiring at least 6 hours of bright, direct sunlight each day. Insufficient light can lead to leggy growth and fewer blooms.

• Soil: Well-draining, slightly acidic to neutral potting soil is ideal. Geraniums do not thrive in heavy, water-retentive soils.

• Watering: Allow the top inch of soil to dry out between waterings. Overwatering can lead to root rot, while underwatering can cause wilting and stunted growth.

• Temperature: They flourish in temperatures between 15°C to 25°C. Geraniums are sensitive to frost and should be protected or moved indoors as cooler weather approaches.

Maintenance

• Fertilising: Apply a balanced, water-soluble fertiliser every 4 to 6 weeks during the growing season to encourage healthy growth and flowering.

• Pruning: Regular deadheading of spent blooms helps to promote further flowering. In spring, prune back any leggy growth to encourage bushier plants.

• Pest Management: Keep an eye out for pests such as aphids, whiteflies, and spider mites. Regular inspection and the use of organic insecticidal soap can help manage infestations.

Floral Arrangements

Geraniums are versatile in floral designs. Their vibrant blooms can be combined with other seasonal flowers for striking centrepieces or used singularly in contemporary arrangements.

• Cutting Flowers: Harvest geraniums in the morning when moisture levels are high. Use a sharp knife or scissors to cut the stems at an angle, ensuring a longer vase life. Remove any leaves that will sit below the water line to prevent rot.

• Design Tips: Pair geraniums with contrasting foliage or complementary flowers. Consider their scent when using scented varieties, as they can enhance the olfactory experience of a bouquet.

Hong Kong flower shop guide

Geraniums are a delightful addition to any garden or floral arrangement. With the right care and attention, they can provide blooms that add colour, charm, and a pleasant fragrance throughout the growing season. Their adaptability makes them suitable for various settings, from urban balconies to garden beds.