Bougainvillea

Bougainvillea spp. · Tree/Shrub

A thorny climber famous for vivid papery bracts around tiny flowers. It thrives on heat, sun and a little neglect; in cold areas it is grown in a pot and brought in for winter.

Care at a glance

Light

Full sun, 6+ hours; more sun means more color

Water

Deeply but infrequently; let soil dry between waterings

Soil

Well-drained, light, slightly acidic, pH 5.5–6.5

Temperature

Best 70–90 °F; protect below 40 °F

Spacing

5–10 ft apart along a support

Container

At least 5 gallons; slightly snug pots help flowering

Bloom

Flushes from spring to autumn

Lifespan

Perennial; woody for many years

When?

Plant outdoors in spring once nights stay above 50 °F. Potted plants go out after frost and come in before the first cold nights (estimated).

Step by step

1. Handle the root ball gently; bougainvillea dislikes root disturbance.
2. Plant at the same depth in a hot, sunny spot or large pot.
3. Give a sturdy trellis or wall support and tie stems as they grow.
4. Water deeply, then wait until the top 2 in of soil is dry.
5. Feed with a low-nitrogen, flowering fertiliser in the growing season.
6. Prune lightly after each flush to encourage new flowering tips.
7. Wear gloves; stems carry sharp thorns.

Common problems

Pets

Bougainvillea is generally listed as non-toxic to cats and dogs, but the thorns can scratch. If in doubt, ask your vet.

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