UNITED STATES—While dormant for winter, some types of plants get dug from the soil and sent to nurseries as ‘bare root’ stock. Some get packaged with their otherwise bare roots contained in bags of damp sawdust. Most just get heeled into damp sand in the retail nurseries where they get sold. These simply get pulled from the sand when sold.
At their new home gardens, bare root plants simply get planted where they will sleep through the rest of winter. In spring, they wake up and start to grow as if nothing ever happened. How sneaky! They do not need big holes for their bare roots. Their graft unions (the ‘kinks’ at the bases of the trunks of grafted plants) must stand above grade. Roots only need to be spread out laterally.
Soil amendment should be minimal. Too much soil amendment promotes root growth around the trunk, which can inhibit root dispersion elsewhere. Too much excavation and amendment below the roots may eventually settle, so that graft unions sag below grade, and get buried. A light dose of fertilizer a bit later promotes early root growth, even while the branches are still bare.
Bare root plants are much more portable than canned (potted) plants. Several can be wrapped and sent home in a small car, or even through the mail; which is why so many bare root plants can be purchased online. (Climate zones should be considered when purchasing online.) Because they occupy less space than canned plants, many more varieties are available in nurseries.
Because they are so easy to handle and process, bare root plants cost about a third of what canned plants cost. Mail order plants from growers often cost even less than those that must be sent to retail nurseries first. Bare root plants are at least as reliable as canned stock, disperse roots more efficiently, and are less likely to be infected with disease when they arrive.
The most popular bare root plants are roses, cane berries, grapevines and fruit trees, like apricot, peach, nectarine, cherry, plum, prune, almond, apple, pear and persimmon. Flowering crabapple, flowering cherry, poplar, lilac, forsythia, wisteria, rhubarb, strawberry and asparagus are also available.
Highlight: coast rosemary
Just like real rosemary, the coast rosemary can either be a low ground cover or a dense shrub. Lower cultivars can get nearly five feet wide without getting much more than a foot high. Shrubby types can get nearly six feet tall without getting much wider. Shrubby types are more popular than ground cover types, and are often pruned so that they do not get too broad.
The tiny leaves of coast rosemary are silvery or grayish green, and can be variegated. Small white or very pale lavender flowers bloom sporadically throughout the year, and can be profuse in spring. Established plants do not need much water, but are probably happiest if watered somewhat regularly through summer. Shade subdues silvery foliar color and inhibits bloom.
Shrubby coast rosemary makes a delightful low hedge. It can be shorn like any other formal hedge, but is best where it has space to develop naturally. If space is limited, but not ‘too’ limited, a coast rosemary hedge can be aggressively shorn once annually at the end of winter, and then allowed to grow wild for the rest of the year.