Regions: west

Purple trumpet flushes twice a year, and leaves that smell of garlic when crushed.

Blue butterfly pea — a light climber that fixes nitrogen and makes blue tea.

Passion flower — intricate blooms and the host plant of tawny coster butterflies.

The desert milkweed, smaller than gigantea and even tougher.

A relentless nectar plant — and an invasive that must be kept in a pot.

Flat clusters of small stars that butterflies can actually land on.

Yellow bells almost all year on a shrub that survives a forgotten terrace.

A spiny yellow-flowered shrub of dry scrub, unbothered by heat or thin soil.

Flowers every day of the year and asks for nothing. Indigenous to the deccan.

Orange flower clusters straight off the trunk — a sacred tree, now threatened.