Begonia boliviensis Zn8a (10º to 15ºF) Begoniaceae
A fairly hardy perennial Begonia that may even survive temperatures colder than
we list. To 14" tall and forming a clump it produces pendulous tubular orange
flowers from mid summer into fall. Part shade to shade in rich well drained soil with regular water in summer. Mulch in fall. Great in a woodland under large shrubs and with other perennials. Amazing, cascading container plant. One of the parents of modern Tuberous Begonias.
Begonia grandis ‘Heron’s Pirouette’ Zn7a (0º to 5ºF) Begoniaceae
A cold hardy perennial Begonia that is very easy to grow. Excellent in a woodland in part shade in regular to amended moist garden soil. It makes a carefree companion under shrubs or with other perennials such as Astilbe and Hosta. Pink flowers from June until frost. Angelwing shaped leaves that gleam slightly golden on top with a rich red on the underside. Deciduous. Spreads to make bold patches.
Begonia ‘Metallic Mist’ PPAF Zn8a (10º to 15ºF) Begoniaceae
Possibly the most striking Hardy Begonia to grow in the PNW. Very large maple-like leaves have a heavy metallic sheen and arch from stems up to 18" tall. Deep green veins add to the contrast. Rockin' perennial for shady woodland gardens in rich well drained soil. Late summer pink flowers are cute but don't hold a candle to the fantastic foliage. Regular summer water. Clump forming. Winter deciduous- returns in early May.
Begonia sutherlandii Zn8a (10º to 15ºF) Begoniaceae
A little perennial Begonia from South Africa. To 10" tall and as wide with vivid single orange trailing flowers. Part shade and rich WELL DRAINED soil with regular water in summer. Hardy in a protected location in the ground. Remember where you plant it, comes up late. Excellent container plant. Cold gardens may lose this plant. Lift as a houseplant for insurance. Blooms May- frost. Some gardeners have it for years.
Berlandiera lyrata Zn4b (-25º to -20ºF) Asteraceae
Chocolate Daisy is a short lived perennial native from Kansas to N.Mexico. Yellow daisy like flowers exude the amazing fragrance of Cocoa- but only during the day. YUM! Blooms June until frost, especially if spent flowers are removed. Full sun and very well drained soil in the ground- (Rock garden conditions). Great in containers. Occasional water. Sweeter than Chocolate Cosmos. Butterflies like it too.
Perennials
Perennials return year after year and are the organic heart of the garden. They represent the most sustainable type of landscaping. So many are available today that we focus on the best and most unusual.

Plants for problem areas
perennials B
Cypella coelestis