Life Span
Perennial
Perennial
Origin
Northeastern United States, Mid-Atlantic United States, Southeastern United States, North-Central United States, Central United States, South-Central United States
Hybrid origin
Types
Apricot Delight, Copper canyon
Not Available
Number of Varieties
Not Available
Habitat
Roadsides, sand dunes, Waste areas
Damp Places, Marshy ground
USDA Hardiness Zone
5-8
6-9
Sunset Zone
1a, 1b, 2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
2a, 2b, 3a, 3b, 4, 5, 6, 7, 8, 9, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Habit
Clump-Forming
Clump-Forming
Flower Color
Yellow
Yellow, Red, Orange, Pink
Flower Color Modifier
Bicolor
Bicolor
Fruit Color
Tan
Not Available
Leaf Color in Spring
Green
Green, Blue Green
Leaf Color in Summer
Green
Green, Blue Green
Leaf Color in Fall
Green
Blue Green, Gray Green, Light Yellow
Leaf Color in Winter
Light Green
Light Green
Plant Season
Summer
Spring, Summer
Sunlight
Full Sun, Partial Sun
Full Sun, Partial Sun
Growth Rate
Medium
Medium
Type of Soil
Loam, Sand
Clay, Loam, Sand
The pH of Soil
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Drainage
Well drained
Well drained
Bloom Time
Early Summer, Summer, Late Summer
Early Summer, Summer
Tolerances
Variety of soil types
Drought
Where to Plant?
Container, Ground, Pot
Container, Ground
How to Plant?
Divison, Seedlings, Stem Planting
Divison, Seedlings
Plant Maintenance
Low
Medium
Watering Requirements
Average Water Needs, Do Not over Water, Never Over-water, Requires regular watering, Water more in summer
Needs more water during establishment, Water Deeply, Water in morning to avoid prompting diseases, Water in the early morning hours
In Summer
Lots of watering
Lots of watering
In Spring
Moderate
Moderate
In Winter
Average Water
Average Water
Soil pH
Acidic, Neutral, Alkaline
Acidic, Neutral
Soil Type
Loam, Sand
Clay, Loam, Sand
Soil Drainage Capacity
Well drained
Well drained
Sun Exposure
Full Sun, Partial Sun
Full Sun, Partial Sun
Pruning
Remove damaged leaves, Remove dead branches, Remove dead leaves, Remove dead or diseased plant parts
Cut or pinch the stems, Remove damaged leaves, Remove dead branches, Remove dead leaves
Fertilizers
All-Purpose Liquid Fertilizer, fertilize in growing season
All-Purpose Liquid Fertilizer, Apply N-P-K
Pests and Diseases
Slugs, Snails
Onion thrips, Red blotch, Root rot
Plant Tolerance
Variety of soil types
Drought, Moisture
Flower Petal Number
Single
Single
Foliage Texture
Fine
Coarse
Foliage Sheen
Matte
Matte
Allergy
Abdominal pain, Constipation, Diarrhea, Skin irritation
Not Available
Aesthetic Uses
Beautification, Borders, Landscape Designing, Showy Purposes
Borders, Cottage Garden, Ground Cover
Beauty Benefits
Good for skin, Making cosmetics, Stops hair loss
Not Available
Environmental Uses
Air purification, Food for insects, Versatility
Air purification
Medicinal Uses
Eczema
Not Available
Part of Plant Used
Root
Not Available
Other Uses
Decoration Purposes, Medicinal oil, Showy Purposes, Used as Ornamental plant, Used for its medicinal properties
Not Available
Used As Indoor Plant
Yes
No
Used As Outdoor Plant
Yes
Yes
Garden Design
Edging, Feature Plant, Groundcover, Mixed Border
Container, Cutflower, Mixed Border, Rock Garden, Wall
Botanical Name
OENOTHERA 'Cold Crick'
KNIPHOFIA 'Border Ballet'
Common Name
Suncups, sundrops
Tritoma, Wisley Blue Spring Starflower, Wisley Blue Springstar
In Hindi
Evening Primrose
Tritoma
In German
Evening Primrose
Tritoma
In Spanish
onagra
tritoma
In Greek
Νυχτολούλουδο
tritoma
In Portuguese
Evening Primrose
Tritoma
In Polish
wiesiołka
Tritoma
In Latin
vespere Primrose
Trytoma
Phylum
Magnoliophyta
Tracheophyta
Class
Magnoliopsida
Magnoliopsida
Order
Myrtales
Asparagales
Family
Onagraceae
Liliaceae
Genus
Oenothera
Kniphofia
Clade
Angiosperms, Eudicots, Rosids
Angiosperms, Monocots
Tribe
Onagreae
Not Available
Subfamily
Onagroideae
Not Available
Season and Care of Evening Primrose and Tritoma
Season and care of Evening Primrose and Tritoma is important to know. While considering everything about Evening Primrose and Tritoma Care, growing season is an essential factor. Evening Primrose season is Summer and Tritoma season is Summer. The type of soil for Evening Primrose is Loam, Sand and for Tritoma is Clay, Loam, Sand while the PH of soil for Evening Primrose is Acidic, Neutral, Alkaline and for Tritoma is Acidic, Neutral.
Evening Primrose and Tritoma Physical Information
Evening Primrose and Tritoma physical information is very important for comparison. Evening Primrose height is 1.00 cm and width 0.10 cm whereas Tritoma height is 45.70 cm and width 50.80 cm. The color specification of Evening Primrose and Tritoma are as follows:
Evening Primrose flower color: Yellow
Evening Primrose leaf color: Green
Tritoma flower color: Yellow, Red, Orange and Pink
- Tritoma leaf color: Green and Blue Green
Care of Evening Primrose and Tritoma
Care of Evening Primrose and Tritoma include pruning, fertilizers, watering etc. Evening Primrose pruning is done Remove damaged leaves, Remove dead branches, Remove dead leaves and Remove dead or diseased plant parts and Tritoma pruning is done Cut or pinch the stems, Remove damaged leaves, Remove dead branches and Remove dead leaves. In summer Evening Primrose needs Lots of watering and in winter, it needs Average Water. Whereas, in summer Tritoma needs Lots of watering and in winter, it needs Average Water.