Yellow Cosmos
Cosmos sulphureus
Also listed as Bidens sulphurea, Bidens artemisiifolia
Also known as Sulfur Cosmos, Sulphur Cosmos, Orange Cosmos
Climate Match for your location
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Yellow Cosmos is a warm-season annual or tender perennial with delicate, feathery foliage and bright golden-yellow flowers that bloom prolifically from summer through fall. It thrives in hot, dry conditions and requires minimal maintenance once established.
Why grow it
Yellow Cosmos differs from its orange and pink relatives (Cosmos bipinnatus) in preferring even hotter, drier conditions with greater heat tolerance and lower water needs once established. It flowers prolifically with minimal deadheading compared to some ornamental annuals, making it useful for low-input gardens in arid or semi-arid regions. The fine foliage and cheerful yellow blooms extend color into fall when many warm-season plants fade.
Watch out for
In humid climates or with excessive watering, plants may develop powdery mildew or root rot, so allow soil to dry between waterings. Self-seeding can be prolific in favorable conditions, requiring management if you wish to prevent volunteer seedlings the following season.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native Range
Mexico
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
Yellow Cosmos is a warm-season annual or tender perennial with delicate, feathery foliage and bright golden-yellow flowers that bloom prolifically from summer through fall. It thrives in hot, dry conditions and requires minimal maintenance once established.
Climate Match for your location
See how well Yellow Cosmos grows in your area.
Enter your ZIP code and we'll show you how this plant fits your local climate.
Why grow it
Yellow Cosmos differs from its orange and pink relatives (Cosmos bipinnatus) in preferring even hotter, drier conditions with greater heat tolerance and lower water needs once established. It flowers prolifically with minimal deadheading compared to some ornamental annuals, making it useful for low-input gardens in arid or semi-arid regions. The fine foliage and cheerful yellow blooms extend color into fall when many warm-season plants fade.
Watch out for
In humid climates or with excessive watering, plants may develop powdery mildew or root rot, so allow soil to dry between waterings. Self-seeding can be prolific in favorable conditions, requiring management if you wish to prevent volunteer seedlings the following season.
Overview
- Form
- Growth Rate
- Size
- Dormancy
- Family
- Asteraceae
Native Range
Mexico
Seasonality
Bloom Season
Season of Interest
Herb
Soft non-woody plants of the field layer.
Succession Role
Tolerances & Soil
Establishment & Care
- Establishment
- Maintenance
- Propagation
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