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To plant ‘Roselow,’ follow the planting dates and spaces recommended for shrubs in your area. In the temperate zone, it should be planted in the spring as soon as frost is out of the ground, generally before May 15 or June 1. The maximum spacing between plants should be 10 feet (o ensure establishment, control weeds during the first few years. Once ‘Roselow’ is established, you can use approved herbicides for effective weed control. Whenever you use a herbicide, be sure to follow the manufacturer’s directions carefully. ‘Roselow’ Sargent crabapple seed was first collected from evaluation plantings by the Soil Conservation Ser- vice (SCS) at its Elsberry Plant Materials Center in Mis- souri. SCS established the shrubs in 1940 at Elsberry using seedlings obtained from the horticultural farm at Iowa State University. Like other crabapples, ‘Roselow’ is susceptible to borers, the eastern tent caterpillar, and San lose scale. But because it is a native of the Orient, it is not an alter- nate host for juniper rust. ‘Roselow’ usually produces an abundant crop of fruit averaging 27 pounds (12 kg) per shrub. Each shrub pro- vides 0.8 pound (0.4 kg) of clean seed. Seedlings are eas- ily propagated from seeds sown in nursery beds in late October. One pound of seed will produce about 5,000 plants. |