Although having lovely green foliage, the desert false indigo's habit find few gardeners in love with it. The blue-violet to indigo colored flower spikes occur in midsummer. A spreading but also upright, rather unkempt deciduous shrub, it is native to a wide expanse of the eastern United States and southcentral Canada as well as in moister canyons and steamsides in the southwest America deserts. Often considered weedy, it is a tough, durable plant.
The pleasant bright green leaves are made up of 13-33 oval leaflets, perhaps its prettiest feature. The sprawling gray-brown stems are topped by flinger-like spikes of indigo blue-violet, pea-shaped flowers in late spring or early summer. Each has orange colored anthers that carry the pollen which is collected by beeds and butterflies. It loses its foliage in winter to reveal the seemingly untidy looking naked branches.
Grow desert false indigo in full to partial sun in moist, fertile to nutrient poor soils with good drainage. It is quite tolerant of heat and drought and thus makes it very useful to green up areas where few other plants grow nicely. Once established, it will persevere, sometimes reseeding and becoming invasive, such as in the American Northeast. If trained, the lowest branches can be removed to create a more upright shrub that looks like a small tree. Use it in the water conserving garden as an accent or to vegetate barren areas in urban concrete matrices. (info source: Learn2Grow.com)
Genus - Amorpha
Species - Fruticosa
Common name - Indigo Bush
Pre-Treatment - Not-required
Hardiness zones - 4 - 9
Height - 8'-15' / 2.40 - 4.60 m
Spread - 8'-15' / 2.40 - 4.60 m
Plant type - Medium Shrub
Vegetation type - Deciduous
Exposure - Full Sun, Partial Shade
Growth rate - Medium
Soil PH - Acidic, Neutral
Soil type - Loam, sand
Water requirements - Drought Tolerant, Average Water
Landscape uses - Foundation, Mixed Border, Rock Garden / Wall, Screening / Wind Break
Bloom season - Late Spring, Early Summer
Leaf / Flower color - Green / Indigo, Blue Violet
1. Soak in hot tap water for 24 hours.
2. Repeat process on seed that did not imbibe.
3. Sow seed 2 mm (1/16") deep, tamp the soil, lightly mulch the seed bed.
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