Thunbergia Grandiflora (Blue Trumpet Vine)

This plant thrives in full sun, meaning it requires at least 6–8 hours of direct sunlight daily. Ideal locations include south- or west-facing balconies, terraces, open gardens, or window sills that receive strong sunlight for most of the day.

Water deeply 2–3 times a week, depending on weather and soil type. Early morning or late evening is best. Increase frequency during peak summer or dry spells.

30–40% Garden Soil/Loamy Soil: Provides structure, anchorage, and essential minerals.
20–30% Compost/FYM (well-rotted): Enriches the mix with organic matter and promotes healthy microbial activity.
20–30% Sand/Perlite: Improves drainage and aeration, especially important in pots.
10–20% Vermicompost: Supplies balanced, slow-release nutrients.

Optional: A handful of bone meal or neem cake for root development and pest resistance. This blend supports deep root growth, strong branching, and sustained health whether planted in pots or directly in the ground.

For these plants, use a phosphorus-rich liquid fertilizer (like 10-30-20 or similar) every 2–3 weeks during the blooming season to support healthy flowers. Dilute to half strength to avoid overfeeding.

Mix in a moderate amount of well-rotted compost or vermicompost every 4–6 weeks to improve soil fertility and encourage continuous blooming. Reduce or stop feeding during the off-season when flowering slows.