Mitriostigma axillare aka African Gardenia

Mitriostigma axillare is a shrub. It belongs to the Rubiaceae family. Common names include African gardenia and lemon-scented gardenia. It grows wild from Mozambique to South Africa's northeastern Cape Province. Kew places it in the seasonally dry tropical climate group. It is not native to Britain or Ireland. Its home climate gives some context for its care. But that alone does not show its garden water needs.

The shrub has a rounded form. Chicago Botanic Garden lists it for specimen planting. This means growing it as a single focal plant. The supplied profile chiefly describes its shape through that rounded outline. The evidence gives no height or spread at full size. It thus offers no firm size guide for garden plans. It gives no fine details of bark, stems, or leaves.

The flowers are white. Chicago Botanic Garden lists bloom times in all twelve months. This supports blooms year-round when growing conditions suit the plant. It does not mean each plant blooms without a break. The RHS profile uses the name lemon-scented gardenia. But the supplied text does not describe the scent itself. Nor does it describe flower shape, fruit, or seeds. It names no pollinators, the creatures that move pollen between flowers.

Chicago Botanic Garden lists full sun and partial shade as suitable. Its profile gives USDA hardiness zones 10–11 for the shrub. These are the zones the evidence supports for growing it outdoors. The sources give no UK hardiness rating. The care data calls for a moderate amount of water. This gives a better guide to care than its home climate alone. The sources give no clear needs for soil texture or drainage. They do not state its pH needs, or how acid or alkaline soil should be.

The sources support its use as a specimen shrub. They note its rounded form and white blooms as display traits. The profiles do not rate how fast it grows. Nor do they rate how hard it is to care for. They name no pests or diseases. There is no evidence here for edible parts or medicinal uses. The sources do not show it is safe for people or pets. These brief records give no toxicity warning. That lack of a warning does not prove safety.