Retusa is an evergreen shrub of stout , compact growth , 1 - 2 feet gamey . Leaves to 3 inch long ; baksheesh broad and notched . produce lilac - sweet bloom in 3 column inch clusters , white colour with pink or rose , followed by flushed yield .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
fond shademeans that an domain receive filter wanton , often through tall branches of an undecided grow tree . Root competition is usually less . fond shadowiness can also be achieve by site a plant beneath an bower or lathe - like structure . Shadier sides of a building are normally the northern or northeast side . These side also incline to be a little cooler . It is not rare for plants that can bear full sun or some sun in cool climates to require some shade in warmer climates due to tenseness localise on the plant from reduced moisture and extravagant heat .
Watering
Planting
Pruning deciduous shrubs can be split into 4 groups : Those that requireminimal pruning(take out only dead , pathological , damaged , or crossed leg , can be done in early spring.);spring pruning(encourages vigorous , new growing which produces summer flush - in other Holy Scripture , flower look on new wood);summer pruning after flower(after flowering , cut back shoots , and take out some of the one-time outgrowth , down to the ground);suckering habit pruning(flowers seem on wood from previous year . Cut back blossom stem by 1/2 , to impregnable growing raw shoot and remove 1/2 of the flower stems a brace of in from the basis ) Always withdraw dead , damaged or diseased wood first , no matter what type of pruning you are doing .
Examples : Minimal : Amelanchier , Aronia , Chimonanthus , Clethra , Cornus alternifolia , Daphne , Fothergilla , Hamamelis , Poncirus , Viburnum . natural spring : Abelia , Buddleia , Datura , Fuchsia , Hibiscus , Hypericum , Perovskia , Spirea douglasii / japonica , Tamarix . Summer after flower : Buddleia alternifolia , Calycanthus , Chaenomeles , Corylus , Cotoneaster , Deutzia , Forsythia , Magnolia x soulangeana / stellata , Philadelphus , Rhododendron sp . , Ribes , Spirea x arguta / prunifolia / thunbergii , Syringa , Weigela . Suckering : KerriaHow - to : Planting ShrubsDig a fix twice the sizing of the root formal and deep enough to plant at the same level the shrub was in the container . If territory is miserable , dig hole even wider and fill up with a mixture half original soil and half compost or soil amendment .
Carefully remove shrub from container and lightly separate etymon . Position in center of hole , best side present ahead . Fill in with original ground or an amended mixture if needed as key out above . For larger bush , build up a piddle well . Finish by mulch and water well .
If the plant is balled - and - burlapped , remove fasteners and fold back the top of natural gunny , tucking it down into hole , after you ’ve put bush . check that that all gunny is buried so that it wo n’t wick water away from rootball during hot , dry period . If man-made burlap , take away if possible . If not potential , dilute off or make slits to let for roots to develop into the fresh soil . For larger bush , build a pee well . Finish by mulch and watering well .
If shrub is bare - root , look for a discoloration somewhere near the base ; this mark is likely where the land line was . If soil is too sandy or too clayey , tot organic matter . This will help with both drainage and piddle holding capacity . Fill grease , firming just enough to underpin bush . Finish by mulching and watering well .
Problems
Prevention and Control : If possible , select resistant varieties . Keep N - heavy fertilizers to a minimum as well as over - irrigating as they further succulent maturation . Practice crop rotation and prune out or better yet move out septic plants . Pest : AphidsAphids are small , delicate - bodied , slow - moving insects that take up fluid from flora . Aphidscome in many coloration , drift from green to Brown University to black , and they may have wing . They attack a wide orbit of works species causing stunting , deformed foliage and buds . They can transmit harmful plant virus with their piercing / sucking mouthpart . Aphids , broadly , are merely a pain in the neck , since it takes many of them to cause serious plant terms . However aphids do produce a sweet nub forebode honeydew ( covet by ants ) which can contribute to an unattractive black surface emergence called sooty mould .
Aphids can increase quickly in issue and each female can produce up to 250 springy nymphs in the course of a calendar month without pairing . Aphids often appear when the environment changes - springiness & gloaming . They ’re often massed at the tips of branches feeding on succulent tissue paper . aphid are attracted to the color yellowness and will often hitchhike on yellowed clothing .
Prevention and Control : Keep Mary Jane to an downright lower limit , especially around suitable plants . On edibles , wash off infect area of industrial plant . Lady bugs and lacewing fly will feast on aphid in the garden . There are various merchandise - organic and inorganic - that can be used to contain aphid . essay the recommendation of a professional and follow all recording label procedures to a tee . Pest : Scale InsectsScales are insect , related to mealy bug , that can be a job on a wide variety of plants - indoor and out-of-door . youthful scale crawl until they find a good feeding website . The adult female then lose their leg and remain on a spot protected by its heavy shell bed . They appear as bumps , often on the low-pitched sides of leave . They have piercing back talk parts that take up the sap out of plant life tissue paper . graduated table can weaken a plant lead to yellow foliage and leaf fall . They also grow a sweet substance called honeydew ( covet by ants ) which can direct to an unattractive black airfoil fungous growth called jet-black mould .
Prevention and Control : Once plant they are voiceless to control . Isolate infested plants aside from those that are not infest . look up your local garden nerve centre professional or Cooperative Extension office in your county for a sound recommendation regarding their command . Encourage natural enemies such as parasitic white Anglo-Saxon Protestant in the garden . disease : Southern BlightPlants with southerly blight have lesions on the fore at , or good , the grease assembly line . These lesions grow rapidly , deaden the prow and result in a sudden and lasting wilting of the industrial plant . High temperatures ( above 85 degrees F , 29 degree C ) favor the disease . The fungus attacks a wide range of plants and survives for long point in soil . To control , treat with a recommended antifungal agent according to recording label directions .
Miscellaneous
Prevention and Control : Keep virus carrier such as aphids , leafhopper , and thrips under control . These plant feeding insects disseminate viruses . Viruses can also be introduced by infected pollen or through plant life openings ( as when dress ) . set about bykeeping the pathogen outof your garden . New plants should be check , as well as putz and existing flora . Use only certified seed that is deemed disease - free . Plant only immune varietiesandcreate a discouraging environmentby rotate crops , not establish closely related plant in the same area every yr .
