Centaurea macrocephala - GIANT KNAPWEED
Robust looking perennial with large leaves and big yellow flowers.
Blooming time: June-July
Size: 3-4' of height x 2' of width
USDA zones: 3 to 7/8, suitable for cooler area, or areas with cooler summer temps
Culture: sun, half sun (in hotter areas), average soil with average moisture
Moisture Needs: medium, medium-dry, dry, tolerates some droughts
Origin: native to Caucasus, Iran and Turkey, it's considered invasive in the state of Washington
Deer/rabbit resistant: yes/yes
Attracts Hummingbirds: no
Attracts pollinators: pollinator friendly - some bees (including honeybees) and small insects
Pot Size: square 3.5" x 4" deep perennial pot
Plant combinations: For cut flower garden, cottage gardens, sun gardens. Flowers make good cut flowers and can be dried too. Can be combined with a majority of perennials - native and non-native. Looks good with finer structures around it.
Picture copyright: US Perennials
Centaurea macrocephala - GIANT KNAPWEED
Robust looking perennial with large leaves and big yellow flowers.
Blooming time: June-July
Size: 3-4' of height x 2' of width
USDA zones: 3 to 7/8, suitable for cooler area, or areas with cooler summer temps
Culture: sun, half sun (in hotter areas), average soil with average moisture
Moisture Needs: medium, medium-dry, dry, tolerates some droughts
Origin: native to Caucasus, Iran and Turkey, it's considered invasive in the state of Washington
Deer/rabbit resistant: yes/yes
Attracts Hummingbirds: no
Attracts pollinators: pollinator friendly - some bees (including honeybees) and small insects
Pot Size: square 3.5" x 4" deep perennial pot
Plant combinations: For cut flower garden, cottage gardens, sun gardens. Flowers make good cut flowers and can be dried too. Can be combined with a majority of perennials - native and non-native. Looks good with finer structures around it.
Picture copyright: US Perennials