Plant Descriptions: Apple Tree Rootstock

Pacific Groves Apple Tree Rootstocks
Fruit Tree Rootstock
Most fruiting stock we offer is "Certified virus free". This stock is produced from virus indexed scion trees, virus certified root stocks and is apparently free from known virus diseases within accepted standards established by the 
Oregon State Department of Agriculture.
What this means to the home or commercial fruit grower is a much healthier tree. This tree will produce larger yields of superior quality fruit. This tree will grow faster, live longer and will minimize many fruit tree diseases.
Apple Tree Rootstock
  Seedling - This is "standard" size stock that produces vigorous and well-anchored trees. Generally seedling-rooted trees are slower to come into bearing than those on the clonal rootstocks but perform very well in less vigorous growing conditions.

Emla III - This stock produces trees 75 percent the size of seedling and about as well anchored. In non-irrigated soils it is somewhat tolerant to drought. Trees on EMLA III, in combination with spur varieties of red delicious, produce a tree of approximately ½ to 2/3 the size of standard stock.
Resists woolly aphid and collar rot.

Emla - Trees on this stock are similar in size to those on EMLA III, but due to heavier cropping, EMLA 106 bearing trees may be a bit smaller. EMLA 106 is well anchored and non-suckering. It is a productive rootstock in situations where collar rot, cold or drought are not prevalent.   
   Emla 7/M7A - Trees on EMLA 7/M7A will grow to slightly over half the size of trees on seedling. The trees are fairly well anchored and cropping is early and heavy. Requires well drained soil.

Emla 26 - This stock has slightly less vigor than EMLA 7A and is better anchored. Trees on EMLA 26 come into bearing early and remain productive under good culture. We recommend tree support during the early years. EMLA 26 is recommended for very close plantings and has the same hardiness as seedling.

Mark (Mac-9) - Bred at Michigan State University with M-9 as mother parent. Will attain the approximate size of EMLA 26 and will be strongly anchored and free standing. Desirable orchard qualities are early flowering, heavy production, free standing, persistence to suckering and tolerance to cold temperature.

Emla 27 - Trees dwarfed between 6' to 10', with pruning less. Ideal for small spaces, container planting, hedging or espalier. Young trees need staking.