Leaf retention: In winter, dies to ground and stem breaks off at root,
leaving no trace of root location. Plant reappears in mid winter or spring.
Growth rate: Moderate to rapid.
Mature Size: 1.5' high and 3-4' wide. After a few years, may cover
16-25 square feet.
Flowers: Purple trumpet flowers, 1" wide and 2-3" long, open
late afternoon and close early morning, especially in full sun.
Bloom: Several blooming cycles spring, summer and fall in response to rain.
Many flowers bloom at once, often over entire plant.
Fruit: Seeds held in papery capsule formed by dried bracts.
Leaves: Green, broadly oval with pointed tip. Leaves and stems turn
white after winter die back and should be collected and discarded to avoid
scattered trash appearance in garden.
Stems: No thorns. Many-branched.
Roots: A deep tuber that grows larger every year. Very difficult
Wildlife: Musky aroma at night attracts hawkmoths. May serve as food
plant for hawkmoth caterpillar.
Toxic / Danger: All parts poisonous.
Origin: Southwestern United States and Mexico.
Cultivation and Uses
USDA hardiness zones: 5-10.
Heat tolerant: Yes.
Drought tolerant: Yes.
Sun: Full sun to part shade. Best in part shade.
Water once established: Every two months during drought.
Watering may result in wildlife browsing unless protected
by a fence. Tolerates some supplemental water during
drought but overwatering leads to leaves and stems
turning brown and breaking off.
Soil: Well drained, dry, low organic content,
5.6-8.5 (acidic to alkaline).
Litter: Low except end of season.
Propagation: Seed. Scarify seed before planting.
Another common name is Showy Four O'clock.
Do you have additional information or a different
experience for this plant that you would like to share?
Email email@example.com. All contributions
are welcome and appreciated.
copyright © GardenOracle.com