Orchid, Cockleshell orchid with dark purple striped labellum forming a hood with shell-like appearance at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Spider orchid Paphiopedilum Harold Koopowitz at the 2011 Orchid Festival in Chiang Mai, Thailand.

Slipper orchid with pattern of purple, cream and white extending over petals and lip at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Lady Slipper orchid with mottled brown, cream and white petals and lip at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid. Vanda coerulea cultivar hybrid at the 2011 Orchid Festival in Chiang Mai, Thailand. Cluster of flowers with purple spotted petals.

Orchid, Spider orchid with orange petals spotted with brown at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Blue vanda with pale blue petals marked with checkerboard pattern at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Blue vanda with pale blue petals marked with checkerboard pattern at the 2011 Orchid Festival in Chiang Mai, Thailand.

Orchid, Blue vanda with pale blue petals marked with checkerboard pattern at the 2011 Orchid Festival in Chiang Mai, Thailand.

Yellow Oleander, Thevetia peruviana. Single open flower and buds growing in Phrao, Chiang Mai, Thailand.

Slipper orchid, Paphiopedilum Concolor with pale yellow, spotted flower at the 2011Orchid Festival in Chiang Mai, Thailand.

Spurge, Euphorbia characias wulfenii. Close, cropped large rounded head of small greenish yellow flowers held within cupped bracts.