White Vinca Seeds

Growing White Vinca from Seed in Jordan

Catharanthus roseus White

1. About the Plant and Seeds

White vinca (Catharanthus roseus White) is a summer-flowering ornamental perennial grown as an annual in areas with cold winters. Its pure white flowers and glossy green leaves enhance gardens, beds and balconies. High heat and drought tolerance suit Jordan's hot, dry climate.

Benefits of Growing White Vinca

Heat and drought tolerance suit Jordan's hot climate. Continuous flowering throughout summer into autumn. Grows easily with little care. Attracts butterflies and bees, helping pollinate other plants. Suitable for beds, pots and open gardens.

2. Detailed Instructions for Growing White Vinca from Seed

A. Soil Preparation: 10 Days Before Planting

• Vinca needs well-drained soil, such as sandy or clay soil mixed with peat moss.
• A soil pH of 5.5-6.5 is preferred for good nutrient uptake.
• Add 2-4 kg of organic fertilizer per square metre to improve soil fertility.
• Cultivate and aerate the soil to prevent water accumulating around the roots.

B. Gardening Tools and Supplies

• A garden spade for soil preparation.
• High-quality white vinca seeds.
• A hand sprayer or drip irrigation system.
• Pruning shears to remove faded flowers and encourage new blooms.

C. Sowing in Jordan: Months 3-5

• Sow in spring (March-May) for strong summer growth.
• Scatter seeds on the soil surface and cover with a very thin layer of fine soil, approximately 0.5 cm.
• Keep in a warm location at 20-25°C for successful germination.
• Use a transparent plastic cover to retain humidity and speed up germination.

D. Germination: 7-14 Days After Sowing

• Seeds need low light and moderate moisture to start growing.
• After seedlings emerge, move them to a sunny, well-ventilated location.
• Gradually reduce watering to prevent root rot.

E. Plant Care: Months 1-5

Watering: water vinca moderately every 3-4 days, avoiding overwatering. Feeding: use balanced NPK 20-20-20 fertilizer, as detailed below. Pruning: remove faded flowers to encourage new blooms. Light: provide 6-8 hours of direct sunlight daily. Disease prevention: avoid overwatering to prevent fungal diseases.

F. Flowering: From Month 2 Until the End of Summer

• Vinca begins flowering 6-8 weeks after sowing.
• Flowering continues into autumn, especially with feeding and removal of faded flowers.

3. Fertilizer Program: NPK 20-20-20

Base Fertilization: 10 Days Before Planting

• Add 2-4 kg of organic fertilizer per square metre to improve soil fertility.

Feeding During Growth

• Month 1: apply 10 g of NPK 20-20-20 per square metre after seedlings emerge.
• Month 2: apply 15 g of NPK 20-20-20 per square metre to encourage vegetative growth.
• Month 3: apply 20 g of NPK 20-20-20 per square metre to support abundant flowering.
• Months 4-5: apply 10 g of NPK 20-20-20 every two weeks to maintain continuous flowering.

4. Common Vinca Pests and Their Control

• Aphids cause curled leaves and weak growth. Control: spray horticultural soap or Actara insecticide.
• Red spider mites cause yellowing leaves. Control: use neem oil or abamectin.
• Powdery mildew appears as a white coating on leaves. Control: use Topaz or Score fungicide.
• Root rot results from overwatering. Improve soil drainage and reduce watering.

5. Additional Tips for Growing White Vinca in Jordan

Sow from March to May (3-5) for healthy summer growth. Provide 6-8 hours of direct sunlight daily. Water deeply at wider intervals to prevent rot. Grow in pots or directly in the garden, ensuring good drainage. Regularly remove faded flowers to prolong flowering and stimulate new blooms.

Summary

White vinca (Catharanthus roseus White) is an easy-care summer ornamental with drought and heat tolerance, suitable for gardens and balconies in Jordan. Balanced watering, suitable 20-20-20 feeding and regular pruning can provide abundant blooms throughout summer, enhancing green spaces.