Guide to Growing Flowers from Seed in Hong Kong
Hong Kong's subtropical climate offers an excellent opportunity for gardening enthusiasts to grow a variety of flowers from seeds. Here’s a Bloom & Song guide to some of the best flowers you can cultivate, along with essential information on planting and care.
1. Marigolds (Tagetes)
Growing Conditions
Sunlight: Full sun
Soil: Well-draining, fertile soil
Planting Instructions
Sow seeds directly into the soil from March to October.
Space seeds about 15-30 cm apart.
Water regularly, keeping the soil moist but not waterlogged.
Care Tips
Deadhead flowers to encourage continuous blooming.
They are relatively pest-resistant.
2. Zinnias (Zinnia elegans)
Growing Conditions
Sunlight: Full sun
Soil: Well-draining, sandy loam
Planting Instructions
Sow seeds directly in the garden after the last frost, typically from April onwards.
Space seeds 30 cm apart for good airflow.
Care Tips
Water deeply but infrequently to avoid root rot.
Fertilise every few weeks with a balanced fertilizer to promote growth.
3. Cosmos (Cosmos bipinnatus)
Growing Conditions
Sunlight: Full sun to partial shade
Soil: Well-drained soil; tolerant of poor soil conditions
Planting Instructions
Sow seeds from March to June.
Scatter seeds over the soil and lightly cover with a thin layer of earth.
Care Tips
Thin seedlings to allow good air circulation.
Their nectar attracts butterflies, making them a delightful choice for a pollinator garden.
4. Sunflowers (Helianthus annuus)
Growing Conditions
Sunlight: Full sun
Soil: Nutrient-rich, well-draining soil
Planting Instructions
Sow seeds directly in the soil from late March to June.
Space seeds about 30-45 cm apart for larger varieties.
Care Tips
Water deep to encourage strong roots.
Stake tall varieties to prevent them from toppling over in heavy winds.
5. Nasturtiums (Tropaeolum majus)
Growing Conditions
Sunlight: Full sun to partial shade
Soil: Poor to average fertility, well-draining soil
Planting Instructions
Sow seeds directly into the garden from September to November.
Space seeds around 30 cm apart.
Care Tips
Regular watering is needed, especially in dry spells.
They can attract aphids, so keep an eye out for pests.
6. Petunias (Petunia)
Growing Conditions
Sunlight: Full sun
Soil: Well-draining, nutrient-rich soil
Planting Instructions
Start seeds indoors in late winter to early spring or sow directly outside after the last frost.
Transplant seedlings once they have a few true leaves.
Care Tips
Regular deadheading encourages more blooms.
Water well during dry periods, but avoid soggy conditions.
HK Florist tips
Growing flowers from seed in Hong Kong can be a rewarding experience. Ensure you choose the right location for sunlight and soil conditions, and attend to watering and fertilising needs. By following these guidelines, you can enjoy vibrant blooms that add beauty to your garden or home.
