Some authorities suggest that M27 is ""difficult"" because it is so small, but in our experience growing M27 apple trees is straightforward provided you attend to their needs - regular watering, good soils, mulching and weed suppression. Suitable forms: Trees may be held to any desired height by summer pruning. Apple Rootstocks The use of clonal rootstocks for apples began in the mid-1900s. B 118 is from the same Russian program that created Budagovsky 9 (B 9). Rootstock: M.7 EMLA: Formerly known as EM VII. M7 Apple Rootstock – EMLA 7 dwarfs trees to 65% of standard height, but can be kept smaller with summer pruning. Small centre leader / spindlebush, Cordons, oblique cordons, Small espalier / fan, G.16 is slightly more vigorous than M9, and with superior winter cold hardiness. This rootstock is moderately susceptible to blight and collar rot. Can be prone to suckering. MM111 is one of the most adaptable of all rootstocks, and will grow in a very wide range of soil conditions. M.7 … Small centre leader / spindlebush, Cordons, oblique cordons, Small espalier / fan, The most important dwarf apple rootstock, planted worldwide. It was released from East Malling and Merton research stations England. Ground around the tree should be kept weed-free (e.g. Derived from the very dwarfing M27 rootstock, but noticeably more vigorous. Selected in 1912 from unknown parentage at the East Malling Research station in Maidstone, Kent, England. Dwarfing similar to M.26 and G.11. Factor in the grower’s expectations, and the spectrum of interaction between all of those considerations makes rootstock selection all the more difficult. M.7 EMLA has been widely planted since the 1960s with cultivars such as ‘McIntosh’, ‘Empire’, ‘Cortland’, ‘Golden Delicious’ and spur strains of ‘Delicious’. G.210 is a good choice for the backyard orchardist wanting a medium-size (M26-class) tree, and although staking is recommended it is not essential. At present rootstock blight is poorly understood. 15 to 20. It is a good choice for a traditional orchard. Bush, Centre leader / spindlebush, Large cordons, Fan or espalier. 20 or more. Antonovka is a seedling apple rootstock and will eventually produce a full-size tree. M7 G6210 G6879 G8189 iAu514 iAu568 G6976 18 G5890 G6001 G6253 G4013 TEB M2 G4213 TEC G5463 G6589 G6024 X-2) 0.0 0.5 1.0 1.5 2.0 2.5) Performance of Fuji with 53 Rootstocks (Crist Bros. Resistant to fireblight, powdery mildew, moderately resistant to collar rot. [60% size of standard tree] This rootstock is precocious, fire blight and woolly apple aphid resistant and cold hardy. Josh, you are close to us, so our experiences may be specifically helpful, if limited in scope. It is extremely cold hardy, well anchored, and works with most soils. APPLE Rootstock. collaborated efforts between East Malling and the John Inn Institute ,Merton started in 1922 and intensified in 1928, leading to Merton Immune series (MI778-793) in 1930 and Malling Merton series(MM101-115) in the 1950.All were resistant to woolly apple aphid. Suggested for trial for growers desiring a freestanding tree. P.18 is a vigorous apple rootstock and will eventually produce a full-size tree. Apple Rootstock Info: MM.111 EMLA. There are many to choose from, yet no perfect choice. The rootstocks produce few root suckers or burr knots. Apple trees on this rootstock grow 15 feet tall and begin producing fruit within five years. Our site experiences the coldest mid-winter temperatures across all locations. It is susceptible to collar rot, but much less so than MM106. It is resistant to fireblight and has some tolerance of wet conditions / phytophthora. Susceptible to collar rot on wet sites. Trees on M26 Apple Rootstock – EMLA 26 grows 8-12 feet tall, is very winter hardy, adapted to most soils, and well anchored though may need staking on windy sites. Trees tend to produce many rootsuckers. Final Height at Maturity (feet) Spacing between Trees (feet) Spacing between rows (feet) Years to begin bearing (years) Other Information. One of the original Malling series rootstocks, widely planted in North America, and noticeably more vigorous than M26. Not as productive as G.11, but probably a better choice in the South, where WAA is a problem. Small centre leader / spindlebush, Cordons, oblique cordons. It can be considered roughly equivalent to the MM106 Apple rootstock. Although this rootstock produces many suckers, it is very cold-hardy and results in a heavy-bearing tree. 9 E u r o p e B. Slightly larger than M26, but far more productive and precocious. The most dwarfing of all apple rootstocks, produces a tree which will be smaller than a person standing with their arms slightly spread out. Half-standard, Large centre leader / spindlebush, Large fan or espalier. M.7 is a semi-dwarfing apple rootstock producing 50-60% of standard apple tree. Small centre leader / spindlebush, Cordons, oblique cordons, Small espalier / fan. G.969 rootstock Mature height: Medium, 9ft-12ft Suitable forms: However, they did not assess the in vitro … For the backyard orchard, 7ft spacings would be more practical. M-7 rootstock dwarfs to 65% of standard size. Mature tree size may differ in other climates and... $3.50 Depending on which rootstock is used, apple trees may be broadly classified into 4 categories: dwarf, semi-dwarf, semi-vigorous or semi-standard, and vigorous or standard size. Similar in size to vigorous clones on M9 such as Nic 29, usually most efficient dwarf rootstock. St Julian A: St Julien A is the most widely-used rootstock for plums. Malling 9 (M.9) rootstock is one of the original Malling series of size-controlling rootstocks developed in Great Britain at East Malling Research Station earlier in the 1900s.