Pages

Thursday, September 2, 2010

Rudbeckia subtomentosa 'Henry Eilers'

Family: Asteraceae
Nativity: North America, US, Illinois
Zone: 5-7
Bloom Time: July - September
Flower: Bright yellow composite flowers with 15+/- rolled, quill-like ray flowers and brown or black cone shaped disks. Flowers bloom in clusters atop strong branching stems.
Foliage: Green leaves are ternately compound or singular, obovate - lanceolate and hirsute on top, tomentose beneath, and alternately arranged.
Habit: From 10"-1'. Basal mounds emerge 3'-5' stiff, upright, branching stems.
Culture/Exposure: Full sun. Well drained moisture retentive soils to lean arid soils once established.
Propagation: division
Disease/Pest: Powdery mildew

Eupatorium dubium

Family: Asteraceae
Nativity: Maine, south to South Carolina
Zone: 4-9
Bloom Time: July - early August
Flower: Dense corymbs of tiny tubular mauve-pink or purple flowers that fade to brown with time.
Foliage: Ovate to lanceolate leaves, arranged in whorls, medium green, slightly rugose, serrated margins.
Habit: 3'-4' tall, 2' wide. Multiple stems rising from a basal crown that slowly builds out over time.
Culture/Exposure: Full sun to part shade. Average to fertile, moisture retentive soil. Doesn't mind a wet/damp soil.
Propagation: division, self sows
Disease/Pests: mildew, leaf spot