Gisela® 3 (U.S.P.P. #16173)
The most dwarfing in the Gisela series of rootstocks, it is about 30-35% of
Mazzard at maturity. It is widely adapted to soil types and very precocious. This
rootstock promotes vigorous growth the first year or two and then slows once
fruiting starts. Great for growing under tunnels and super-high density plantings.

Gisela® 5 (148-2 cv.) U.S.P.P. #9622
A popular introduction in Germany, this rootstock produces a very precocious tree
approximately half the size of trees grown on Mazzard rootstock. It produces an
open, spreading tree with wide angles. It is quite virus tolerant and does well in
heavy soil. Trees grown on Gisela® 5 may need to be supported. Some
suckering may occur depending on growing conditions. It is very hardy and
produces well. It is compatible with most varieties. It has shown good results in
Washington State.

Gisela® 6 (148-1 cv.) U.S.P.P. #8954
A semi-dwarf rootstock that produces a tree slightly smaller than Mazzard,
roughly 80 to 90 percent. A good substitute for Mazzard, Gisela® 6 is well suited
for heavy soil types. Stimulates very early blooming and heavy bearing and has a
wide range of soil adaptability and actually like heavy soils.  The tree structure is
very open and round. Very precocious despite its vigor. It appears tolerant to
many cherry viruses (bacterial canker) and is not prone to suckering. Anchors
well, but may need support, especially in the first fruiting years because of its
precocious nature.

Gisela® 12(195-2 cv.) U.S.P.P. #9631
A precocious, semi-dwarf cherry rootstock, yielding a tree about 60% of one
grown on Mazzard. Produces a tree that is stocky, spreading and open. Wide soil
adaptability and does well on heavy soils.  This stock is very precocious and
productive. Resists suckering has good virus resistand, is well anchored but
may require support.

Krymsk 5 is adapted to a wide range of soil types. Trees are well anchored and
winter hardy with low to moderate suckering. Krymsk 5 is sensitive to prune dwarf
virus and necrotic ring spot virus.  A semi-dwarf rootstock that produces a tree
slightly smaller than Mazzard, roughly 80 to 90 percent.
Krymsk 6 Tree size is 65% to 75% of Mazzard with low to moderate suckering.
Krymsk 6 is winter hardy and adapted to a wide range of soil types. Like Krymsk
5, it is sensitive to prune dwarf virus and necrotic ring spot virus.

Krymsk 6  Tree size is 65% to 75% of Mazzard with low to moderate suckering.
Krymsk 6 is winter hardy and adapted to a wide range of soil types. Like Krymsk
5, it is sensitive to prune dwarf virus and necrotic ring spot virus.

Mazzard (P. avium)  This seedling rootstock produces a vigorous tree with very
good anchorage. It is best compatible with sweet cherries. It tends to resist
common cherry diseases better than Mahaleb. It has some tolerance to
Phytophthora and is moderately resistant to Oak Root Fungus. It grows best on
sandy loam soil, but is also tolerant of heavy soils. It is susceptible to Crown Gall
and Bacterial Canker . But it is resistant to water stress, and root knot
nematodes. Overall, Mazzard seedling makes a very large and hardy tree, with a
few root suckers.

Mahaleb  This seedling rootstock comes in more of a bush form than Mazzard. It
produces a standard size cherry tree. It is cold hardy, drought tolerant, and highly
productive. It's anchorage is excellent. It is susceptible to Oak Root Fungus, Root
Knot and especially Phytophthora. It is somewhat resistant to Crown Gall and
resistant to Bacterial Canker and Root Lesion. It grows best in light sandy loam
soils. It does poorly in heavy soils.

MXM® 60 Developed in Oregon, this clonal rootstock is a natural hybrid of
Mazzard and Mahaleb.  It shows a wide range of soil compatibility and is used as
a under stock for both sweet and sour cherries.  MxM®60 has moderate
resistance to phytophthora and crown gall and expresses some tolerance to
bacterial canker.  The root is more productive than mazzard and research shows
little to no suckering.  Hardiness is similar to Mahaleb and vigor is slightly greater
than Mazzard.

Maxma® 14  This hybrid rootstock is a result of a cross between Mazzard and
Mahaleb.  It is rated in vigor as 20-25% more dwarfing than Mahaleb.  This lends
itself to higher density plantings.  Maxma® 14 is compatible with most cherry
varieties and is quite precocious and productive.  It is considered to be one of the
leading rootstocks in use in Europe.  Maxma® 14 rootstock is tolerant to wet
soils and is resistant to iron chlorosis.
Stan Peterson Fruit Tree Sales, LLC
2574 S. Benedict Road
Ludington, MI  49431
Toll Free 1-888-333-1464
Fax 231-843-4113
Email:  fruit-treesales@outlook.com
Cherry Rootstock