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Top primrose
Also known as: German primrose
Primula obconica is a species of flowering plant in the family Primulaceae, native to China. It is a short-lived evergreen perennial growing to 40 cm tall by 25 cm broad, with rosettes of coarse, heart-shaped leaves, and thick stalks bearing umbels of lavender flowers in late winter and early spring. The specific epithet obconica means "inverted cone", referring to the convex flowers. This is a tender plant which us usually grown annually as a houseplant or in a cool greenhouse. Numerous cultivars have been developed, of which 'Libre Magenta' has gained the Royal Horticultural Society's Award of Garden Merit. The hairs on the leaves may cause allergic reactions.
Scientific classification
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Perennial, Annual, Biennial
Lifespan
Herb
Plant Type
Spring, Winter
Bloom Time
30 cm
Plant Height
White, Pink, Purple, Blue, Yellow, Red, Lavender, Orange
Flower Color
Evergreen
Leaf type
20 - 38 ℃
Ideal Temperature
Spring, Winter
Growth Season

Images of Top primrose

Cultivars

There are several recognized cultivars of Top primrose, including the following common varieties :

Quickly Identify Top primrose

1
Basal rosette of elongated, glandular-haired leaves
2
Funnel-shaped flowers in pale lilac or purple with yellow center
3
Indoor blooming during winter and spring
4
Heart-shaped leaves with sticky glandular hairs and distinct vein pattern
5
Optimal in cool, indirect sunlight environments
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Care Guide for Top primrose

Every week
Water
Partial sun
Sunlight
20 - 38 ℃
Ideal Temperature
Potting Mix, Garden Soil
Soil Type
Water: Top primrose thrives in moist, shaded environments, requiring consistent moisture without waterlogging. It has low drought tolerance and needs weekly watering. As an evergreen, top primrose retains foliage year-round, necessitating careful winter watering to maintain soil moisture.
Fertilize: To enhance bloom production for top primrose, apply high phosphorus fertilizers bi-weekly in the growing season, then monthly in colder months. Use a diluted solution to avoid over-fertilization. As top primrose enters dormancy, reduce feeding. Wear gloves to prevent skin irritation from sap.
Pruning: Top primrose features vibrant flowers and compact growth. Prune by removing spent blooms and dead foliage in early spring to late winter for optimal health. This enhances air circulation, prevents disease, and promotes vigorous regrowth. Use sharp, clean tools to minimize stress.
Propagation: To propagate top primrose, surface sow seeds in a high-quality mix within shallow trays for drainage. Keep soil moist using a fine mister. Provide ample light for seedlings and transplant them to individual pots when they are large enough, ensuring careful handling throughout the process.
Repotting: Repot top primrose every 2-3 years in late winter using a wide, shallow pot to support its shallow roots. After repotting, keep top primrose in indirect light and maintain moist soil. Handle gently, as it is sensitive to disturbance, ensuring proper care for its health.
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