This section is from the book "The Complete Garden", by Albert D. Taylor. Also available from Amazon: The Complete Garden.
Under excellent care, good results may be attained by transplanting all plants during the fall planting season, or during the spring planting season. For the best results, however, it is advisable to plant some types during the fall planting season and other types during the spring planting season. The two groups A and B contain plants specifically adapted for planting; some in the fall and some in the spring. Group C contains a list of plants which transplant with extreme difficulty, and can be transplanted with better success during the spring months with the exception of the trailing arbutus listed in Group C-a. This plant is extremely difficult to transplant with any success at any season. Those who have had considerable experience with the trailing arbutus are of the general opinion that if it is taken up during the month of July and moved with a goodly amount of soil about its roots together with some additional soil in which to plant it in the new location, some success may be assured. Special care should be taken immediately after this plant is transplanted to give it a mulch of some light texture such as partially decayed oak leaves in order to provide a satisfactory fertilizer and to prevent excessive evaporation from the soil which surrounds the roots.
A. Plants Which Should Be Transplanted in Autumn:
Anemone pennsylvanica Canadian Windflower
Aquilegia (in variety) Columbine
Dicentra spectabilis Bleeding-heart
Doronicum plantagineum excelsum Leopard's Bane
Hepatica triloba Hepatica
Iris (in variety) Iris (See Page 90)
Lilium (not stem-rooting) Lily
Paeonia Peony
Phlox divaricata
Wild Sweet William
Primula (in variety)
Primrose Sanguinaria canadensis
Bloodroot Trillium (in variety)
Wake Robin
Trollius europaeus Globe-flower
B. Plants Which Should Be Transplanted in Spring:
Acer rubrum Red Maple
Acer saccharinum
Silver Maple Anemone japonica
Japanese Windflower Azalea (in variety)
Azalea Benzoin aestivale
Spice Bush
Betula (in variety) Birch
Buddleia veitchiana Summer Lilac
Calycanthus floridus
Strawberry Shrub Chrysanthemum (in variety)
Chrysanthemum
Colutea arborescens Bladder Senna
Cornus florida
Flowering Dogwood Cotoneaster horizontalis
Prostrate Cotoneaster
Crataegus (in variety) Thorn
Ericaceous plants of all sorts
Fagus sylvatica
European Beech Hedera helix
English Ivy
Hibiscus syriacus Rose of Sharon
Kalmia (in variety Laurel
Kerria japonica Globe-flower
Liquidambar styraciflua Sweet Gum
Liriodendron tulipifera Tulip Tree
Magnolia (in variety)
Magnolia Morus rubra
Red Mulberry Pieris (in variety)
Fetterbush
Populus (in variety) Poplar
Rhododendron (in variety) Rhododendron
Rhus canadensis Fragrant Sumac
Rosa rugosa Japanese Rose
Stephanandra flexuosa Stephanandra
Tamarix gallica French Tamarisk
Taxus (in variety)
Yew Ulmus americana
American Elm
Viburnum plicatum Japanese Snowball
Vitex agnus-castus Chaste Tree
 
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