Cascabela thevetioides aka Thevetia

Cascabela thevetioides is a shrub or tree from Mexico. Kew’s plant records place it in the Apocynaceae family. They show that it grows in a tropical climate with dry seasons. This tells us about the place where it grows wild. It does not tell us when to water it in gardens. The sources support both its shrub and tree forms. They give no height or spread for a full-grown plant. We thus lack a sound size range for garden plants.

The RHS uses the name Thevetia thevetioides for this plant. It marks that name as unresolved, so its status remains unclear. The entry says the plant is not native to Britain or Ireland. It gives no useful facts about the plant’s leaves. Nor does it describe its bark, stems, flowers, or fruit. The sources do not confirm their shape, colour, or size. They give no time of year when this species blooms. These gaps limit what we can say about its looks.

Safety is the main garden concern in the RHS entry. The plant is poisonous when eaten and can irritate skin. This warning covers people and several kinds of pets. It includes dogs and rabbits, as well as rodents and poultry. The RHS says to wear gloves when handling the plant. It also calls for other gear to protect you. The sources name no part that is safe to eat. They give no grounds for using this species as medicine. The warning matters where people or animals might touch or eat it.

The supplied Missouri Botanical Garden text covers a different species, Cascabela thevetia. We cannot use its garden sizes or care advice here. The same holds for its flower facts and landscape uses. Its hardiness figures do not show how well Cascabela thevetioides withstands frost. Its notes on pests and disease concern the other species, too. For this plant, the sources give no known soil needs. They offer no tested light needs or guide to garden watering. They do not state its growth rate or pruning needs. Its dry tropical home gives context, not a full care guide. We must keep garden uses apart from the firmer identity and safety facts.