Oenothera macrocarpa
TAXONOMY
FamilyOnagraceae
GenusOenothera
Zone5
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Plants of the World OnlineABOUT
Oenothera macrocarpa, commonly known as Missouri Evening Primrose or Bigfruit Evening Primrose, is a perennial plant native to the central United States. It is known for its large, bright yellow flowers that bloom in the evening and close by midday. The plant thrives in temperate climates and has a dormancy period during the winter months.
ALSO KNOWN AS
Megapterium Macrocarpum
Megapterium Missourense
Megapterium Nuttallianum
Missouri Evening Primrose
Oenothera macrocarpa subsp. macrocarpa
Oenothera macrocarpa var. missourensis
Oenothera missouriensis
Oenothera missouriensis var. latifolia
OVERVIEW
VPDCalculate
WaterDry
SoilLoamy
LightDirect Bright (6 Hours)
Temperature20° C
Humidity50%
Dormancy3 Months
pH6.5
Pressure1,013 mbar
DETAILS
Care Instructions
Oenothera macrocarpa requires bright, direct sunlight for optimal growth. It prefers moderate temperatures and can tolerate a range of humidity levels. Water the plant when the soil is almost completely dry, and ensure it has good drainage to prevent root rot.Soil
This plant prefers well-draining loam soil. It can tolerate poor soil conditions but thrives best in moderately nutrient-rich soil. Ensure the soil dries out almost completely between waterings to mimic its natural habitat.Fertilizer
Use a balanced fertilizer with a nutrient composition of 5-10-10. Fertilize the plant once in the spring and once in the summer to support its growth and flowering.Repotting
Repot Oenothera macrocarpa every 2-3 years or when it outgrows its container. Choose a slightly larger pot with good drainage, and handle the roots carefully to avoid damage.Propagation
Propagate the plant through seeds or cuttings. The best time to propagate is in the spring. Sow seeds in well-draining soil and keep them moist until germination. For cuttings, take a healthy stem, dip it in rooting hormone, and plant it in a suitable growing medium.Pruning
Prune the plant in early spring to remove dead or damaged stems and to encourage new growth. Regular pruning helps maintain the plant's shape and promotes more vigorous flowering.Toxicity
Oenothera macrocarpa is not toxic to pets or humans. It is safe to grow in gardens where children and pets are present.Additional
This plant is drought-tolerant once established and can be a great addition to rock gardens or xeriscapes. It attracts pollinators such as bees and butterflies, making it beneficial for the local ecosystem.REVOLUTIONIZE YOUR PLANT CARE
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