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Hardiness: USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F) USDA Zone 10a: to -1.1 °C (30 °F) USDA Zone 10b: to 1.7 °C (35 °F)
Sun Exposure: Full Sun
Bloom Color: Orange
Bloom Time: Mid Summer Late Summer/Early Fall
Foliage: Grown for foliage Herbaceous Smooth-Textured
Other details: Requires consistently moist soil; do not let dry out between waterings
Soil pH requirements: 6.1 to 6.5 (mildly acidic) 6.6 to 7.5 (neutral)
Patent Information: Non-patented
Propagation Methods: By dividing rhizomes, tubers, corms or bulbs (including offsets) From seed; sow indoors before last frost
On Dec 10, 2010, redtitan from Rochester, WA wrote:
Mashua grew really well here. The plant I had grew vigorously and vined high up the apple tree it was next to. A trellis or an objective for it to climb really helps with this plant. Produced >5 lbs tubers on one plant, but we had a late frost (heavy frosts kill back the plant) this year. Plants except for "Ken Aslet" variety form tubers only after fall equinox, so late frosts help increase yield. Plant flowered in the fall.
On Feb 9, 2003, Michaelp from Orange Springs, FL (Zone 8b) wrote:
A close relative of the common nasturtium, all parts are said to be edible. Resistant to many insects, frost tolerant, high yielding. Can be eaten raw, are a little hot like the radish, when boiled they are not hot, but become mild and sort of sweet. It is said they like cool wet summers and do well in poor soils.