Begonia thelmae

Begonia thelmae: Care and cultivation tips

Begonia thelmae, with its delicate foliage and compact growth, is a popular indoor plant for terrariums. Here are some tips for growing it successfully:

Interest in terrarium

Begonia thelmae is particularly suitable for small terrariums. Its creeping habit and slow growth make it an excellent ground cover plant. It appreciates the high humidity and light shade often present in terrariums, making it an ideal choice for recreating a tropical microclimate.

Exposure and temperature

• Exposure: Begonia thelmae prefers bright but indirect light. Avoid full sun which could burn its foliage.
• Temperature: It likes warm and humid temperatures, typical of tropical regions. An average temperature of 18 to 24°C suits it perfectly.

Watering

• Frequency: Watering should be regular but moderate. The substrate should remain slightly moist at all times, without being soggy.
• Method: Water from below, by placing the pot in a saucer of water for a few minutes, then pouring out the excess.

Substrate

Use a light, well-drained substrate , specially designed for indoor plants. You can add perlite or vermiculite to improve drainage.

Fertilizer

Apply a liquid fertilizer for green plants, diluted to half strength, every two weeks during the growing season (spring and summer).

Repotting

Repot your Begonia thelmae every 2-3 years, in spring, in a slightly larger pot.

Multiplication

Propagation is mainly done by division of the clump when repotting. You can also try stem cuttings, but the success rate is lower.

Mistakes to avoid

• Substrate too dry: A lack of water causes yellowing and falling of the leaves.
• Excess water: Excess water causes root rot.
• Dry Air: Dry air can cause mealybugs and spider mites to appear.
• Lack of light: A lack of light causes the stems to etiolate.

By following these tips, you will be able to successfully grow your Begonia thelmae and enjoy its delicate beauty in your terrarium. With its fine and delicate foliage, the Begonia thelmae will bring a touch of elegance to your terrarium or your interior.

Additional tips:

• Humidity: Mist the foliage regularly to increase ambient humidity, especially in winter.

• Size: To maintain a compact shape, you can pinch the ends of the stems.

Specific tips for terrariums:

• Choosing a terrarium: Choose a closed or semi-closed terrarium to maintain high humidity.
• Substrate: Use a mixture of sphagnum moss and perlite for optimal drainage and good moisture retention.
• Ventilation: Ensure good ventilation to avoid air stagnation and the development of diseases.