Trailing four o'clock (Allionia incarnata) is a vine that sprawls across the ground. It favors rocky slopes and sandy soils. The bright cerise blooms consist of three separate flowers appearing to be a single flower. Despite its name, the flowers stay open most of the day. The stems and flowers are sticky.
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Perennial, Annual
Lifespan
Herb
Plant Type
Spring, Summer, Fall
Bloom Time
30 cm
Plant Height
90 cm
Spread
6 mm to 1.5 cm
Flower Size
On This Page
Images
Distribution
Care Guide
Images of Trailing four o'clock
Distribution of Trailing four o'clock
Distribution Map
Native to parts of North and South America, trailing four o'clock naturally occurs in arid to semiarid regions across the continent. Its range extends from the southwestern United States through Central America and down into western South America, where it is adapted to a variety of habitats within these major regions.
Native
Cultivated
Invasive
Introduced
No species reported
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Habitat
Open arid areas, sandy or gravelly soils, gypsum
Hemisphere Trend Curve
Northern
Sorthern
Care Guide for Trailing four o'clock
Every week
Water
Full sun
Sunlight
20 - 35 ℃
Ideal Temperature
Water:
Originating from arid regions, trailing four o'clock conserves water and exhibits drought tolerance, thriving with minimal moisture. Watering weekly suffices, and it prefers dry soil to avoid root rot. Suitable for outdoor xeriscaping, trailing four o'clock requires less irrigation during dormancy in cooler months.
Fertilize:
To promote optimal growth, trailing four o'clock requires balanced fertilizers monthly in the growing season, using a half-strength solution. Reduce feeding in dormancy and apply fertilizers in the morning for best uptake while adhering to dilution instructions to avoid root damage.
Pruning:
Trailing four o'clock is a perennial plant with a sprawling habit and vibrant flowers. Prune in early to late spring by removing dead stems and controlling growth. Use clean, sharp tools for best results, ensuring air circulation to prevent disease and promote vigorous blooming.
Propagation:
Originating from arid regions, trailing four o'clock thrives in diverse landscapes like rock gardens. To propagate, collect and dry seeds, then sow in well-drained soil, maintaining moisture. Warm conditions aid germination, while periodic thinning promotes robust growth, enhancing its trailing habit.
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