Dahlia 'Kaiser Wilhelm'

Dahlia 'Kaiser Wilhelm'

Photo/Illustration: 
Scott Kunst
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(Dahlia 'Kaiser Wilhelm')
DAL-ee-ah
Genus:  Dahlia
Of the maybe 10,000 named dahlias introduced in the 1800s—when dahlias ranked right up there with roses in popularity—only three survive. One of them is 'Kaiser Wilhelm', introduced in 1892. Its 3-inch flowers have neatly curled petals of soft custard-yellow brushed with burgundy, and a green button eye just like that of an old rose. The plant can grow to 5 feet.
Noteworthy Characteristics:  This is a tall heirloom dahlia.
Care:  Plant in well-drained, humus-rich soil in full sun. Fertilize weekly during growth. May need staking. Pinch, remove brandhes and buds, and deadhead to produce a lengthier flower display. Lift tubers in fall and store in a well-ventilated, frost-free location. Dahlias thrive in cool, moist climates.
Propagation:  Take basal shoot cuttings and root under plastic or a mist tent, with bottom heat, or divide clumps into two or more pieces, each with a shoot, and plant out after frost has passed.
Problems:  Aphids, stem borers, spider mites, caterpillars, earwigs, cucumber beetles, capsid bugs, flower thrips, planthoppers, slugs. Powdery mildew, impatiens necrotic spot, dahlia mosaic viruses, smut, fungal leaf spots, soft rot, crown gall, blossom blights (especially gray mold), and tomato spotted wilt virus.

Overview

Height
3 ft. to 6 ft.
Spread
1 ft. to 3 ft.
Growth Habit
Clumps
Growth Pace
Moderate Grower
Light
Full Sun Only
Moisture
Medium Moisture
Maintenance
High
Characteristics
Attracts Butterflies,
Showy Flowers
Bloom Time
Early Fall,
Fall,
Late Summer,
Summer
Flower Color
Green Flower,
Red Flower,
Yellow Flower
Uses
Beds and Borders,
Container,
Cut Flower
Style
Formal Garden
Seasonal Interest
Summer Interest
Type
Perennials

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Dahlia 'Kidd's Climax'
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Salvia microphylla var. neurepia