Seeds from Ehretia rigida – Puzzle bush. This is a deciduous small tree or shrub, usually multistemmed, with an untidy rounded crown. Growing up to 10 feet in zones 8b-11 in full sun. It has tangled branches which arch downwards or droop. This rather haphazard look gives it its common names, puzzle bush. The leaves can be smooth or covered with stiff hairs that are rough to the touch. It has small leaf stalks of about 1 inch long. The flowers grow in dense clusters on the branches. These pale mauve, blue or white fragrant flowers can only be seen in spring. The puzzle bush is becoming very popular as a garden plant because it is hardy and drought resistant. very attractive to birds and insects and is therefore a wonderful addition to the wildlife garden. It can be pruned to make a shape and can also be used as a hedge in a garden. Ripe fruits of this plant are edible but not tasty. ery attractive to birds and insects and is therefore a wonderful addition to the wildlife garden. It can be pruned to make a shape and can also be used as a hedge in a garden. Ripe fruits of this plant are edible but not tasty. It can easily grow from seed and cuttings. Use river sand or a mixture of river sand and compost to sow the seedlings. They should be sown in a seedling tray and be covered with a thin layer of sand. Do not sow the seeds too deeply.