Note: rootstock descriptions are for reference only. Dave Wilson Nursery does not offer rootstock for sale.
Most rugged rootstock for apples. Vigorous, deep-rooted, cold-hardy. Tolerates wet soil, dry soil, poor soil. Unpruned tree height of standard varieties 18' to 30 feet. Trees on apple seedling may be held to any desired height by summer pruning.
Excellent all-around rootstock for apples. Induces early and heavy bearing. Tolerates wet soil, dry soil, poor soil. Resists woolly apple aphids and collar rot. Trees dwarfed to 85 % of standard.
Extremely dwarfing rootstock for apples. Trees dwarfed to 6-8 ft, ideal for high density planting, small spaces in garden. Induces early and heavy bearing. Small root system, young trees may need staking. Good for container growing.
M-7 & M-7A
Dwarfs to 65% of standard. Induces early and heavy bearing. Resistant to fireblight, powdery mildew, moderately resistant to collar rot. Good anchorage. Very winter hardy, widely adapted. Disadvantage: prone to suckering.
Advantages: dwarfs trees to 40 to 45% of seedling size, increases fruit size, may slightly advance maturity. Disadvantages: susceptible to fireblight and wooly apple aphid, trees must be supported, shallow root system may be drought sensitive.
Trees dwarfed to half of standard size. Resists fireblight and phytophthora root rot. Well anchored, no staking required. Few or no suckers. Trees bear so heavily that thinning is essential to control stress on tree. Requires fertile soil, constant moisture. Not presently used by Dave Wilson Nursery.
Dwarfing to 1/3 of Standard. Approximate height to 10', width to 6'. Resistant to Phytopthera. Excellent precocity & cold hardiness. Good for container growing.