Grower Rootstock Descriptions-old


Apple Rootstocks

Note: rootstock descriptions are for reference only. Dave Wilson Nursery does not offer rootstock for sale.

Domestic Apple

Most rugged rootstock for apples. Vigorous, deep-rooted, tolerates wet soil, dry soil, poor soil. Cold-hardy. Unpruned tree height of standard varieties 18’ to 30 feet. Trees on apple seedling may be held to any desired height by summer pruning.

M-111

Excellent all-around rootstock for apples. Tolerates wet, dry or poor soil. Resists woolly apple aphids and collar rot. Induces bearing at young age. Unpruned tree height 80-90% of standard, or about 15-25 ft. Trees on M-111 may be held to any desired height by summer pruning.

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 (prune or break off at least once per year). Trees may be held to any desired height by summer pruning.

Cherry Rootstocks

Note: rootstock descriptions are for reference only. Dave Wilson Nursery does not offer rootstock for sale.

Colt

For sweet cherries. In heavy soils, trees are dwarfed to 70-80% of standard. Lesser dwarfing effect in other soils. Apparently resistant to bacterial canker. Relatively tolerant of wet soils (but good drainage still required). Trees begin bearing at young age.

Gisela® 12

Dwarfing varies with soil, climate conditions and cultivar. Precocious, and production can be heavy, requiring crop management. Well anchored, little suckering, suited to a wide range of soils. Open, spreading growth habit.

Mahaleb

The most winter hardy of the commonly used cherry rootstocks. Sweet cherries slightly dwarfed, no dwarfing effect on sour types. Induces early, heavy bearing. Resists crown gall, bacterial canker, some nematodes. Not tolerant of wet soils.

Maxma® 14

Dwarfing rootstock for sweet cherries; trees dwarfed to about 23 of standard. Less dwarfing expected in fertile loamy soils. Induces early heavy bearing; crop management may be needed for productive varieties in early years. Good tolerance to wet soils, also performs well in calcareous soils. Resistant to bacterial canker and nematodes. Well anchored, very little suckering.

Mazzard

Standard rootstock for sweet cherries. Vigorous, more tolerant of wet soils than Mahaleb (but good drainage still required). Resistant to root-knot nematodes and oak-root fungus.

Peach, Plum & Hybrid Rootstocks

Note: rootstock descriptions are for reference only. Dave Wilson Nursery does not offer rootstock for sale.

Citation

Peaches and nectarines dwarfed to 8 to 14 feet. Apricots and plums dwarfed to 34 of standard. Very tolerant of wet soil, induces early dormancy in dry soil. Very winter hardy. Resists root-knot nematodes. Trees bear at young age. (Zaiger)

Lovell

More tolerant of wet soils than Nemaguard. Also more cold hardy. Susceptible to nematodes in sandy soils. For plums, peaches, nectarines, apricots, prunes, almonds.

M40 Marianna

Similar to Marianna 26-24, but having a deeper root system, better anchorage and fewer suckers. Used mainly for prunes.

Marianna 26-24

Shallow root system, much more tolerant of wet soils than Lovell or Nemaguard. Resistant to oak-root fungus, root-knot nematodes. Mature trees comparatively small. For apricots, plums, most almonds.

Myrobalan 29C

Shallow but vigorous root system. Tolerates wet soils. Immune to root-knot nematodes, some resistance to oak-root fungus. Trees reach larger size compared to Marianna 26-24. For apricots, plums and prunes.

Nemaguard

Vigorous, resists root-knot nematode. Excellent for well-drained soils. In poorly-drained soil, plant on a hill. For nectarines, apricots, plums, prunes, almonds.

ROOTPAC® R

Well-anchored tree, highly resistant to root-knot nematode, resistant to oak-root fungus and Phytophthora, tolerant of saline and alkaline soil conditions. For almonds, nectarines, peaches.

Viking™*

Vigorous, well-anchored, precocious, productive tree, fruit size increased. Highly resistant to root-knot nematode, tolerant of ring nematode and bacterial canker, more tolerant to high pH/saline than peach rootstocks. Shows tolerance of wet soil conditions. For almonds, apricots, nectarines, peaches, plums. (Zaiger)

On Dehydration

*Important note: trees on peach x almond hybrid rootstocks including Atlas and Viking are very sensitive to dehydration. While planting keep roots damp; irrigate after planting.

Walnut Rootstocks

Note: rootstock listings are for reference only. Dave Wilson Nursery does not offer rootstock for sale.

NCB

Paradox

Vx211

Rx1

Almond Rootstocks

Note: rootstock listings are for reference only. Dave Wilson Nursery does not offer rootstock for sale.

Viking

Atlas

Hansen 536

Rootpac R

Titan

Lovell

Nemaguard

Myro 29C

Marianna 26-24

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