Tulbaghia siebertii grows in the summer-rainfall region and prefers full sun to partial shade and a cool climate. Although it grows naturally in a region that experiences hot weather, because it is a high altitude plant, it requires the coolness that is provided by the altitude and frequent mist in its natural habitat.

In cultivation moderate watering is required, especially in the warm months when the plant is actively growing, but watering should be reduced when it enters dormancy. Overwatering can lead to damp conditions which can cause pest infestations such as slugs which are able to resist the strong scent, and fungal diseases relating to dampness.

Tulbaghia siebertii can be propagated both sexually and asexually. 

Sexually, seeds of Tulbaghia siebertii can be collected in summer (December and January) once the capsules have turned from green to cream or whitish which shows they have dried. Seeds can be sown immediately after they are collected. Seeds should be sown in a growth medium that has good nutrient-content and good drainage, such as one consisting of a mixture of 2 parts of potting mixture and 1 part of river sand. Seeds take about 3 weeks to germinate. The seeds that are dispersed in the pots that plants are growing in germinate without any difficulty. The first germination shoot starts coiled and straightens up to form a new plant.

Asexually, this plant can be propagated by division. Bigger clumps can be divided into individual plants, it is important that extra caution is taken not to damage the bulb, especially the young and newly formed bulbs. Division is best done in spring when new growth commences. The divided individual plants can be transplanted to individual pots or bags.