By Julie Christensen
Common cayenne jasmine ( Vinca tike ) is an idealistic works for tough spots . It is also call lesser winkle or creeping myrtle . Although it prefers rich , slightly damp soil , it tolerates a wide range of atmospheric condition , include mud , alkaline soils and drought . Periwinkle has shallow , spread , fibrous base that hold soil in place . Use it on slopes or to prevent soil erosion .
Native to Asia and Europe , old maid is hardy in U.S. Department of Agriculture plant life hardiness zones 4 through 9 . It blooms best in full sun , but it also produce in shade and is often planted under trees . Its dense roots run to crowd out other plants , so apply it alone or plant it with bulb . Periwinkle produce tiny purpleness , bluish or white-hot blooms in spring to summer and has thick green , glossy evergreen foliage .
Planting and Caring for Periwinkle
Periwinkle can be arise from germ , but it grows slowly . A good wager is to use division or nursery transplant . Just a few plants will spread to meet in a large area . Enrich the grunge with compost , manure and peat moss to improve drainage before planting . Plant Madagascar periwinkle in either Lord’s Day or shade . In cold , harsh climates , protect it from air current and water it when the temperature is above freezing to prevent wintertime burn .
Periwinkle grows 3 to 6 inches tall and 2 foot encompassing . Space plant at least 12 to 18 inch apart . found out periwinkle in bounce or other fall . piddle the soil deeply after plant and keep the filth evenly moist during the first 6 to 10 weeks , as the roots become established .
Fertilize periwinkle in outflow with ¼ cupful 10 - 10 - 10 fertiliser per 100 square feet of soil . Mulch ironical soil to conserve moisture . Dig up and discard plant that maturate out of leap to contain periwinkle , particularly if your soil is moist and rich . you may even mow periwinkle in spring if it lead off to calculate straggly . coiffe the mower blade to its highest setting .
Vinca Pest and Disease Potential Problems
Although periwinkle is a long - lived plant , it can ache from many diseases , specially in humid , wet clime . In wet territory , periwinkle lose pestilence or root bunk . total soil amendment to improve drainage and remove and dispose taint plant .
Botrytis blight can also be a problem . Characterized by leaf spots , dying leaves and croak or disfigured flowers , this fungous disease is most dominant in cool , dampish conditions . you may use a antifungal agent , such as atomic number 29 or atomic number 16 , to treat it , but prevention is the good scheme . avert planting red periwinkle too closely and flimsy out the works from time to time . utilise dribble systems , rather than overhead sprinkler , because wet leaves can propagate the disease . Remove any pathological plant life readily and throw out dead plant material .
Periwinkle can also suffer from leaf spots and aster yellows . Treat these conditions as you would botrytis plague . Allow good air circulation between plants , water them carefully and keep the garden uncontaminating .
One terminal annotation about periwinkle : once it becomes established , it ’s difficult to eradicate . institute it in a permanent location and do n’t permit it become invasive .
Varieties Worth Trying
For more information , visit the follow links :
Common Periwinklefrom West Virginia University Cooperative Extension
Common Periwinklefrom Virginia Cooperative Extension
disease of Common Periwinklefrom West Virginia University Cooperative Extension
