Krymsk® 6
(cv. LC-52) USPP#16,114
Krymsk® 6 is 70% of the size of Mazzard. It is comparable in size and precocity to Gisela® 6.
Krymsk® 6 is a great choice for hard-to-set varieties such as Regina, Santina, and Rainier. Krymsk 6 is incredibly heat stress-tolerant. When leaves and fruit on other rootstocks wilt in the heat, the Krymsk roots provide energy to leaves and fruit allowing for firmer cherries.
Krymsk® 6 adapts well to most soil conditions and has good anchorage. Krymsk 6 is very cold hardy.
P. cerasus x (P. cerasus x P. maackii)
Sweet cherries—2000 in California, Oregon, Washington and New York.
Sweet cherries Graft union similar to Gisela® 5.
70% of Mazzard seedling.
Excellent.
Good.
Similar to Gisela® 6.
Good with sweet cherry. Crop load management needed to keep fruit size up.
Fruit ripens 1-3 days ahead of Mazzard, similar to Mahaleb.
Produces some trunk and root suckers. Can be excessive in heavy soils.
Appears to be higher than Mazzard.
Excellent for all but the coldest growing sites in the US.
Resistant to Rootknot Nematode.
Good. Better than Mazzard.
Untested.
Untested.
Unknown.
Very sensitive to PNRS and PDV viruses.
More experience is needed.
More tolerant of low soil moisture stress than Gisela® rootstocks.
Level of susceptibility is unknown, but not extreme.
Good. (8 to 8.5)
Moderate.
