The encouragement of suckering is a desirable goal for maximum yields. After two to four years of establishment, Juneberries will come into bearing. The fruits possess the characteristic of ripening all at once approximately 38 days after petal drop. Propagation Juneberries are propagated from suckers, by crown division, root cuttings or seed. Plants produced from seed are most economical, but up to 30 percent of bushes grown from seed differ from the parent in size and fruiting characteristics.
Seedlings grow slowly and require two to four years to reach transplantable size.
It is difficult to propagate Juneberries from hardwood cuttings, and softwood cuttings give only fair results. Root cuttings and suckers root readily but are difficult to obtain in sufficient quantity and their removal frequently damages the parent plant. Tissue culture techniques may assist in making superior cultivars available in the United States. These propagation methods produce own-rooted plants, which are the most desirable in commercial production of high yielding acreages. Seed propagation should be undertaken in late summer by simply sowing outdoors for about 25 percent germination next spring.