Iochroma cyaneum aka Violet Churur

Iochroma cyaneum, or violet bush, belongs to the nightshade family, Solanaceae. Its native range runs from Ecuador to Peru. It grows in a wet tropical climate in the wild. This shrub is a perennial and is related to Brugmansia. Older names include Iochroma tubulosum and Iochroma lanceolatum. It is not native to Britain or Ireland.

Garden plants reach about 5–8 feet [1.5–2.5 metres] tall and wide. They can reach this size within one to two years. The plant has a bushy form with green leaves. The foliage feels soft, with a slight velvet texture. It may shed all its leaves or keep some. Long purple flowers have a trumpet shape. They bloom in May and June. A second flush may follow in July and August.

A conservatory or greenhouse suits this plant well. Under glass, give it bright light filtered from direct sun. It also tolerates some shade. Outdoors, choose a warm, sunny wall with shelter. South-facing or west-facing sites match the RHS guidance. Its UK hardiness rating is H3. This limits outdoor growing to coastal and other mild areas. Pots allow a move under glass for winter. The plant suits patios, courtyards, and borders beside walls. It also fits cottage and informal gardens.

Use loam or sandy soil that drains well but holds some moisture. Acid, neutral, and alkaline soils are all suitable. Let the soil dry between waterings rather than keeping it wet. The RHS also records some drought resistance. After flowering, light pruning helps keep the plant neat. Hard pruning, even to ground level, can encourage a compact, bushy shape. Root cuttings offer one way to raise new plants. Seed offers another route. Sow it in fine potting compost that drains well. Keep seed pots warm and in filtered sunlight. Germination takes about six weeks.

Watch for red spider mites, whitefly, and mealybugs under glass. Fusarium wilt and verticillium wilt are also possible problems. These risks matter when choosing and checking a growing site. The supplied species evidence gives no details about fruit. It also gives no basis for judging food use or toxicity. Do not treat that lack of detail as proof of safety.