Oak Leaf Mountain Ash
Sorbus hybrida
30 feet high x 17-20 feet wide
Upright oval shape
Zone 3
Full Sun to Part Shade
Out of stock
This cross of European and Swedish Mountain Ash is longer lived than the native species and has been thriving on decades of inattention at the Cheyenne Horticultural Field Station. Grey-green lobed oak-shaped leaves provide yellow fall color. Flat white flower clusters are showy in late spring and the resulting red berry clusters persist through winter unless waxwings or other birds come for a feast. Fireblight resistance is good. Plant in our typically alkaline soil but not in the most exposed site and never in a water-logged site.
Throughout this site, the following are used as guidelines for watering established plants:
These truly xeric plants can live with our 12 inches of natural annual precipitation and only need a winter watering during a multi-year drought, but they will thrive with a monthly watering. Overwatering will kill some of these. These plants are adapted to intermittent deep
watering with soil drying to a depth of a few inches between waterings. Watering frequency may be every couple of weeks during the active growing season and maybe only one winter watering for optimal care. These plants need regular watering somewhat like a bluegrass lawn so that
they never dry to depth in the root system during the active growing season, and need occasional winter watering to prevent root dessication and resultant plant
death. About sizes of our plants:
Sizes indicated with a # are roughly the equivalent in gallonage; so a #2 is about a 2 gallon pot size; b&b stands for balled and burlapped.