Shrub Kalmia latifolia 'Minuet' [Minuet Mountain-laurel] The Minuet Mountain-laurel is a dwarf broadleaf evergreen shrub with an abundance of interesting flower buds and stunning flowers. Site and exposure requirements similar to Rhododendron, that is, acidic, well drained soil and at least light protection from afternoon sun in winter for best results. Mulch to keep roots cool. Hardiness varies widely with geographic source of genetic material. Does not tolerate extremely dry conditions. Flowering is reduced by shade, but deadheading enhances flowering for…
Tree Kalopanax septemlobus [Castor Aralia] No disease or insect problems. Stout prickles could cause injury. Slight weediness via the seeds. Not common in commerce.
Shrub Kerria japonica [Japanese Kerria] Fairly adaptable to soils and microclimates, including considerable shade; best out of extremely sunny exposures. Occasionally winter-injured in the north, but otherwise relatively trouble-free. Suckers and spreads slowly. Needs occasional pruning to remove dead branches and renewal pruning to maintain form.
Shrub Kerria japonica 'Golden Guinea' [Golden Guinea Japanese Kerria] 'Golden Guinea' has crisply textured leaves and bears an abundance of large yellow flowers. Fairly adaptable to soils and microclimates, including considerable shade; best out of extremely sunny exposures. Occasionally winter-injured in the north, but otherwise relatively trouble-free. Suckers and spreads slowly. Needs occasional pruning to remove dead branches and renewal pruning to maintain form.
Shrub Kerria japonica 'Pleniflora' [Double Japanese Kerria] 'Pleniflora' is a very popular cultivar of Japanese Kerria with its long lasting, bright yellow, double flowers that are nearly spherical, reminiscent of "pom-poms". Fairly adaptable to soils and microclimates, including considerable shade; best out of extremely sunny exposures. Occasionally winter-injured in the north, but otherwise relatively trouble-free. Suckers and spreads slowly. Needs occasional pruning to remove dead branches and renewal pruning to maintain form.
Tree Koelreuteria paniculata [Goldenraintree] Colorful small tree in bloom and interesting for its form. Tolerates heat, drought, wind, alkaline soils, and air pollution. Newly emerging leaves can be damaged by late spring freezes. Rather weak-wooded. Can be damaged or killed by –25 degrees F. Invasive in some parts of the country.
