Centaurea ragusina growing herbaceous of the genus Centaurea also known as Silver Knapweed, Centaurea ragusina perennial deciduous used as ornamental plant, can grow in mediterranean, subtropics or temperate climate and growing in hardiness zone 8-11.

Leaves color grey to white in pinnate shape deeply lobed.

Centaurea ragusina flower

Flower color yellow, the flowers petals like little horns base that divide several needle shape, the petals “sit” on green “ball” with spines on it.

Centaurea ragusina for sale – Seeds or Plants to Buy

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Requirements for Centaurea ragusina growing and care:

Drained soil, moist soil, cool winter

What is the best way to start growing?
Plant / Seedling / Seed

Is it necessary to graft or use vegetative reproduction?
No

Difficulties or problems when growing:
Spines on the flowers

Recommended planting season?
Spring, summer in USDA zone 8-11, Autumn, winter, spring 10-11

Pests and diseases:
Powdery mildew, aphids

Pruning season:
Winter

How to prune:
Prune dead leaves and flowers

Size of the plant?
20-60 cm (8-24 inches)

Growth speed in optimal condition:
Medium growing

Water requirement:
Small amount of water

Light conditions in optimal condition for growing:
Full Sun

Is it possible to grow as houseplant?
No

Growing is also possible in a planter /flowerpot / containers:
Yes

Blooming information

Bloom season:
Spring / Summer

General information about the flower
Yellow flowers petals like little horns base that divide several needle shape, the petals “sit” on green “ball” with spines on it.

Scientific name:

Centaurea ragusina

Blooming Seasons

Flower Colors

Climate

Leaf color

Ornamental parts

Plant growing speed

Plant life-form

Plant uses

Planting season

Plants sun exposure

Watering plants

Hardiness zone

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