Matt's 9b field note
“Two plants — one in the ground struggling, one considered for a pot. The berry that makes sour taste sweet.”
Background
Miracle fruit is native to tropical West Africa, where the berries have long been chewed before sour meals. The effect comes from the glycoprotein miraculin, which coats taste receptors and makes sour foods taste sweet for about 30 minutes. It is a slow-growing evergreen shrub with no significant named cultivars; plants are sold as species seedlings.
Distinguishing traits
Small red oval berries about 2 cm long with a single seed; slow bushy shrub reaching only 3-4 ft in containers. Glossy oval leaves; highly acid-dependent plant.
Desert care — zone 9b
- Chill hours
- None.
- Cold hardiness
- Zone 10-11; young plants killed at 32°F, older plants survive brief 32°F; leaf loss below 40°F. In zone 9b it needs winter protection or greenhouse culture, which matches the struggling in-ground plant.
- Heat tolerance
- Not heat tolerant in the desert sense: above 85°F it needs all-day open shade and constant moisture; Phoenix's alkaline soil and dry air are its real enemies.
- Water
- Keep soil consistently moist, never too wet or too dry; use acidified water (citric acid or vinegar) in alkaline-water areas.
- Soil
- Extremely acidic soil is critical: pH 4.0-5.0 (50% peat moss, 50% perlite). Will not thrive in Phoenix's alkaline native soil; containers with acidic mix are strongly preferred.
- Sun exposure
- Part shade; shade from hot afternoon sun.
Where to buy
- Sow Exotic