Clematis Evison 'Bourbon' has large, vibrant red flowers with pink stripes and yellow centres.

Clematis Evison 'Bourbon' has large, vibrant red flowers with pink stripes and yellow centres.

Clematis Evison 'Charmaine' has rich red, single to double flowers with yellow centres.

Clematis 'Luiza' is a dwarf, mounding cultivar with glowing purple-magenta flowers.

Clematis Evison 'Nubia' has large, deep red blooms with red stripes and dark red anthers.

Clematis Evison 'Nubia' has large, deep red blooms with red stripes and dark red anthers.

Clematis Evison 'Picardy' produces large, single flowers of red and purple with deep red bars on vines just 3-4 feet tall.

Clematis 'Rebecca' is among the reddest of all clematis, emerging hot red and then changing to magenta-red.

Clematis Kivistik 'Ruutel' has 6 inch dark magenta red flowers and near-black anthers. Said to be one of the very best pure red clematis.

Clematis 'Niobe' has beautiful very dark ruby red flowers.

Clematis 'Red Star' is a Japanese cultivar that produces fully double red to magenta-red flowers.

Clematis 'Rouge Cardinal' offers glowing shades of red and burgundy red with brownish stamens.

Clematis 'Ville de Lyon' is a classic heirloom cultivar with carmine red flowers frosted with lavender pink.

Clematis 'Yuan' can bloom from the ground to the top of the stems with bicolour pale lavender and purple-pink flowers.

Coleus scutellarioides Under the Sea 'Pink Reef' is a tender tropical with lobed pink and burgundy foliage.

A perennial red coreopsis with mounds of flowers all summer long.

Coreopsis Big Bang 'Sun Splash' has all summer-long fiery flowers of bright red with golden tips.

Large flowers with peachy-orange and coral red colours. Masses of flowers.

'Daybreak' is a great compact Coreopsis with single red flowers with a vibrant golden yellow edge on dark green foliage.

Coreopsis Lil Bang 'Enchanted Red' has large, deep red flowers with yellow centres surrounded by a dark ring that will bloom all summer long.

'Red Elf' is a dwarf coreopsis with very large, bright red flowers. This is a long blooming cultivar.

'Red Satin' is a threadleaf Coreopsis with small, linear foliage topped with masses of red tickseed flowers.

Cornus florida Cherokee Brave has incredible glowing deepest pink to red blossoms. One of the best of all flowering dogwoods.

Cornus florida Cherokee Brave has incredible glowing deepest pink to red blossoms. One of the best of all flowering dogwoods.