Oenothera speciosa
Mexican Primrose
Evening primroses can be annuals, biennials or perennials. They have lance-shaped mid-green leaves, and four-petalled flowers that open in the evening in Summer and Autumn.
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Full sun
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Very little water
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Full Frost Hardy: 5F (-15°C)
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Free draining
Common name
Mexican Primrose
Latin name
Oenothera speciosa
type
Flowering plant
family
Onagraceae
ph
5.5 - 7.0 Acid - Neutral
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Light
Full sun
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Frost
Full Frost Hardy: 5F (-15°C)
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Soil
Free draining
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Water
Very little water
Plant & bloom calendar
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Best time to plant
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When the plant will bloom
full grown dimensions
0.50 M
1.00 M
Oenothera speciosa
Evening primroses can be annuals, biennials or perennials. They have lance-shaped mid-green leaves, and four-petalled flowers that open in the evening in Summer and Autumn.
Flowering Season
From Late Spring TO Early Summer
Produces terminal clusters of bright yellow four-petaled flowers in late spring
Plant container plants
From Mid Spring TO Mid Spring
Plant container plants in a sunny position.
Propagation by Seed
From Mid Spring TO Mid Spring
Fill a seed tray with seed compost, water and allow to drain. Sprinkle seeds over the surface allowing roughly 25mm space between seeds and cover with a thin layer of compost. Put tray in a clear polythene bag and place on a windowsill. When seedlings show remove plastic bag. When the second pair of leaves appear on the seedlings thin out to 50mm spacing by removing the weakest looking plants. After 2 or 3 weeks and when danger of frost has passed plants can then be planted outside into required position.
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