The section has a few pictures of Japanese Maple that have survived in zone 5b. In this hardiness zone they can be very touchy unless the proper microclimate is met.
Pronunciation
{AYE-ser)(pal-MA-tum)
Plant Type
All Plants, Trees Deciduous
Sunlight
full to partial shade, probably best in the shaded site
Moisture
average, moist, never dry
Soil & Site
average, moist, never dry
Flowers
most small and not very ornamental
Fruit
samara
Leaves
leaves red , green to yellow depending on variety
Dimensions
in general less than 20 by 20 in zone #5
Propagation
grafting, cuttings
Author's Notes
The hardiness of these Maples has always puzzled me. I have seen them growing in protected sites but also in hot dry open sites.