Shrub Indiana Native Clethra alnifolia [Summersweet Clethra] Spreads by underground stems to make large clumps, but can be restrained when necessary. Can be badly infested with mites, especially on dry soils. Can suffer in full sun and/or dry soils, but can bloom well in shade.
Shrub Clethra alnifolia 'Compacta' [Compact Summersweet Clethra] Only growing to 2-4' high and wide, Clethra alnifolia 'Compacta' is denser and more compact than the straight species. This plant can suffer in full sun and/or dry soils, but can bloom well in shade.
Shrub Clethra alnifolia 'Hummingbird' [Hummingbird Summersweet Clethra] Clethra alnifolia 'Hummingbird' is an award-winning shrub with abundant, beautfiul and fragrant white flower spikes. However, the habit eventually tends to flop and appear unkempt. It spreads by underground stems to make large clumps, but can be restrained when necessary. This plant can suffer in full sun and/or dry soils, but can bloom well in shade.
Tree Micromeles alnifolia [Korean Mountainash] Sorbus alnifolia is an attractive small, dense tree that produces beautiful clusters of white flowers in the spring. In the wild, this plant lives in cooler, mountain climates and is not well-adapted to USDA zone 8 and south. Intolerant of city conditions. Tends to flowers heavier every other year. Susceptible to fireblight and scab, but resistant to borers that frequently attack other Sorbus. Although this plant is commonly referred to as a "mountainash", it is…
