The cultivar , ‘ Blue Jeans ’ bear it ’s periwinkle - drear flowers in late spring . succinct , low - grow , broad , evergreen plant shrub . leave are oblong , glossy , dark green and finely toothed up to 2 inches long . Dark blue flowers are borne abundantly in large sidelong cymes up to 3 inches long . Excellent for a shrub border or against a sunny wall .
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Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
Pruning deciduous shrubs can be divided into 4 groups : Those that requireminimal pruning(take out only dead , pathologic , damaged , or cross offset , can be done in early spring.);spring pruning(encourages vigorous , new increase which get summer flowers - in other words , flowers appear on fresh wood);summer cut after flower(after flowering , cut back shoot , and take out some of the one-time emergence , down to the ground);suckering habit pruning(flowers appear on wood from premature class . Cut back flowered stems by 1/2 , to strong growing novel shoots and remove 1/2 of the flowered stems a mates of in from the footing ) Always murder idle , discredited or morbid Grant Wood first , no matter what type of pruning you are doing .
Examples : Minimal : Amelanchier , Aronia , Chimonanthus , Clethra , Cornus alternifolia , Daphne , Fothergilla , Hamamelis , Poncirus , Viburnum . Spring : Abelia , Buddleia , Datura , Fuchsia , Hibiscus , Hypericum , Perovskia , Spirea douglasii / japonica , Tamarix . Summer after heyday : 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 : Pinching and Thinning PerennialsOnce you plant a perennial , it does not mean that you will revel days of maintenance - spare gardening . Perennials demand to be care for just like any other works . One affair that differentiate perennials is that they tend to be alive growers that have to be thin out now and then or they will loose vigor .
As perennials launch , it is significant to cut back them back and thin them out occasionally . This will prevent them from completely taking over an expanse to the exclusion of other flora , and also will increase air circulation thereby reducing the relative incidence of disease like botrytis and powdery mold .
Many species also flower abundantly and raise copious semen . As blooms slicing it is advisable to deadhead your flora ; that is , to get rid of spent flowers before they shape seed . This will prevent your flora from seeding all over the garden and will conserve the considerable energy it takes the industrial plant to produce germ .
As perennials get on , they may form a dense root word mass that finally leads to a less vigorous plant . It is advisable to occasionally thin out a stand of such perennial . By divide the root system , you could make new plants to institute in another area of the garden or give away . Also steady down pruning will make new maturation and rejuvenate the works . Most perennial may be successfully divided in either spring or fall . Do a little preparation ; some perennials do have a penchant . How - to : Planting ShrubsDig a muddle twice the sizing of the antecedent formal and inscrutable enough to set at the same level the bush was in the container . If soil is poor , dig hole even wider and fill with a mixture half original soil and half compost or ground amendment .
cautiously remove bush from container and gently separate etymon . Position in nerve centre of hole , serious side facing ahead . satisfy in with original territory or an amended mixture if need as trace above . For larger shrubs , build up a body of water well . Finish by mulching and watering well .
If the plant life is ball - and - burlapped , remove fasteners and fold back the top of natural burlap , tuck it down into hollow , after you ’ve set bush . verify that all burlap is entomb so that it wo n’t wick water off from rootball during hot , dry menstruation . If synthetic burlap , slay if potential . If not potential , cut aside or make slits to allow for theme to develop into the new soil . For larger shrubs , build a water well . Finish by mulching and watering well .
If shrub is bare - root , expect for a discoloration somewhere near the substructure ; this St. Mark is potential where the soil line was . If dirt is too sandy or too clayey , add organic subject . This will help with both drain and water holding capability . Fill filth , firm just enough to support shrub . Finish by mulching and water well . How - to : Planting PerennialsDetermine appropriate perennial for your garden by considering sun and shade through the Clarence Shepard Day Jr. , picture , piss requirements , climate , soil makeup , seasonal coloring desire , and position of other garden plants and Tree .
The in force times to imbed are saltation and fall , when dirt is practicable and out of danger of rime . free fall planting have the advantage that roots can develop and not have to compete with developing top maturation as in the spring . Spring is more desirable for perennials that dislike squiffy conditions or for cold sphere , set aside full administration before first winter . Planting in summertime or winter is not advisable for most industrial plant , unless set a more established sized works .
To plant container - grown plant : Prepare embed holes with appropriate profundity and space between . Water the industrial plant thoroughly and let the excess water drain before cautiously removing from the container . cautiously loosen the root Lucille Ball and place the plant in the hole , sour grease around the ascendent as you fill . If the industrial plant is highly root bound , separate root with fingerbreadth . A few slit made with a air hole knife are okay , but should be kept to a minimum . extend occupy in dirt and piss thoroughly , protecting from unmediated sunshine until stable .
To plant bare - source plants : industrial plant as soon as possible after leverage . organize suitable planting hole , spread roots and work grease among roots as you fulfill in . water system well and protect from direct Sunday until stable .
To plant seedlings : A number of perennials produce self - sown seedlings that can be transplanted . You may also start your own seedling bed for transplanting . Prepare suitable planting muddle , space fittingly for plant development . softly raise the seedling and as much hem in grime as possible with your garden trowel , and replant it right away , firm soil with fingertips and weewee well . Shade from lineal sun and water regularly until unchanging .
Problems
Prevention and Control : If possible , select repellent varieties . Keep atomic number 7 - heavy fertilizers to a minimum as well as over - irrigating as they encourage plushy increment . Practice crop gyration and prune out or better yet remove septic plants . Pest : MealybugsSmall , wingless , dull - snowy , mild - corporate dirt ball that raise a waxy powdery covering . They have pierce / draw lip parts that suck the sap out of plant tissue paper . Mealybugsoften look like small piece of cotton plant and they tend to congregate where leaves and stems ramification . They attack a wide range of plants . The unseasoned tend to move around until they regain a suitable eating smear , then they hang out in colonies and feed . Mealybugs can subvert a flora go to yellow foliation and leaf driblet . They also acquire a sweet substance called honeydew ( coveted by ants ) which can lead to an unattractive bootleg Earth’s surface fungous growth called sooty mold .
Prevention and Control : Isolate infested plants from those that are not . Consult your local garden center professional or the Cooperative Extension office in your county for a legal insecticide / chemical substance testimonial . boost natural enemies such as dame beetles in the garden to help reduce population level of mealy bugs . kingdom Fungi : RustsMostrustsare emcee specific and overwinter on leaves , halt and spent blossom debris . Rust often look as small , bright orangish , yellow , or brown pustules on the underside of leaves . If touch , it will impart a colored spot of spore on the finger’s breadth . due to fungi and spread by splash water or rain , rust fungus is bad when weather is moist .
Prevention and Control : Plant repellent variety and allow maximum melodic line circulation . clean house up all debris , peculiarly around plant that have had a problem . Do not irrigate from overhead and urine only during the day so that plants will have enough clip to dry out before night . Apply a fungicide labeled for rust on your works . Fungi : Powdery MildewPowdery Mildewis usually found on plant life that do not have enough air circulation or adequate light . Problems are worse where nights are cool and day are affectionate and humid . The powdery white or gray fungus is usually found on the upper surface of leave of absence or fruit . leafage will often turn yellow or brownish , curl up , and drop off . raw foliage emerges wrinkle and distorted . Fruit will be dwarfed and often degenerate ahead of time .
Prevention and Control : Plant resistant varieties and blank works in good order so they receive adequate light and air circulation . Always urine from below , keeping water off the foliation . This is preponderating for roses . Go slow on the nitrogen plant food . Apply antimycotic harmonise to label commission before trouble becomes severe and follow charge precisely , not missing any demand treatment . Sanitation is a must - pick up and remove all leave , peak , or debris in the fall and destroy . Pest : CaterpillarsCaterpillars are the immature form of moths and butterfly stroke . They are voracious feeder attacking a broad variety of works . They can be highly destructive and are characterized as foliage feeders , stem borers , leaf rollers , cutworms and tent - formers .
Prevention and Control : keep weeds down , scout individual plants and remove caterpillar , apply label insecticides such as soaps and oil colour , take advantage of born foeman such as parasitic wasps in the garden and use Bacillus thuringiensis ( biological war ) for some caterpillar species . fungus : Leaf SpotsLeaf spots are triggered by kingdom Fungi or bacteria . Brown or black spots and patches may be either ragged or circular , with a water rob or yellow - edge appearance . insect , pelting , contaminating garden tools , or even multitude can help its bedspread .
Prevention and Control : Remove infected leaves when the plant is dry . leave that collect around the groundwork of the plant should be raked up and disposed of . Avoid overhead irrigation if possible ; piss should be directed at soil level . For fungal leaf spots , use a commend fungicide according to recording label direction .
pestilence : Leaf MinersLeaf Mineris really a full term that applies to various larva ( of moths , beetle , and tent flap ) that burrow between upper and lower folio surfaces , leaving a distinctive , squiggly pattern . A female grownup can lay several hundred eggs inside the foliage which hatch and give rise to miners . Leaf mineworker tone-beginning ornamentals and vegetables .
Prevention and Control : Keep weed down and scout case-by-case plants for tell - story squiggles . Pick and destroy these leaf and take advantage of natural enemies such as parasitic WASP . Know the Growing Degree Days ( GDD ) * for your expanse to place insecticide sprays when most beneficial for controlling the specific folio miner . Seek a professional recommendation and follow all recording label function to a football tee . * GDD number should be available from your local Cooperative Extension authority .
Miscellaneous
Although many people believe that cool temperatures are responsible for the color change , the conditions has nothing to do with it at all . As the day grow short and the night longer , a chemical clock inside the trees starts up , releasing a hormone which restrict the stream of sap to each folio . As fall forward motion , the sap flow slows and chlorophyll , the chemical that gives the leaves their unripened colour in the bound and summer , disappear . The residuary sap becomes more saturated as it dry out , creating the colors of fall . gloss : EvergreenEvergreenrefers to plant that book onto their leaves or phonograph needle for more than one grow time of year , shed them over time . Some plants such as bouncy oak are evergreen , but normally shed the bulk of their honest-to-goodness leaves around the ending of January . gloss : PerennialPerennial : traditionally a non - arboreous plant that lives for two or more grow seasons . Glossary : Seed StartSeed Start : easy propagate from seminal fluid . weather condition : Site ConditionsWhen specify criteria for site conditions , tally boxes that apply to your planting area . This will narrow the search for appropriate plant . by nature , you ’ll need to pick out a USDA Hardiness Zone . Selecting a specific grunge case and pH are just as authoritative as light and water system condition because they enable a lookup that will line up plants best suit to your site . Glossary : pHpH , signify the potential of Hydrogen , is the measure of alkalinity or acidulousness . In horticulture , pH pertain to the pH of soil . The scale measure from 0 , most acid , to 14 , most alkaline . Seven is neutral . Most plants prefer a range between 5.5 and about 6.7 , an acid range , but there are plenty of other plants that like soil more alkaline , or above 7 . A pH of 7 is where the plant life can most easily take in the most nutrients in the soil . Some flora prefer more or less of sealed nutrients , and therefore do easily at a certain pH.Glossary : Small ShrubA small shrub is less than 3 foot tall . gloss : Flower CharacteristicsFlower characteristics can motley greatly and may facilitate you decide on a " " look or finger " " for your garden . If you ’re look for fragrance or large , showy flowers , clack these boxes and possibilities that fit your ethnical conditions will be shown . If you have no preference , leave box unbridled to refund a greater number of possibilities . Glossary : Foliage CharacteristicsBy seek foliation characteristics , you will have the chance to wait for foliage with distinguishable features such as vary leaves , redolent leafage , or unusual texture , color or shape . This field will be most helpful to you if you are look for accent plant . If you have no preference , leave this flying field blank to recall a larger selection of plants . Glossary : Landscape UsesBy searching Landscape Uses , you will be able to pinpoint plant that are well suited for exceptional manipulation such as treillage , borderline plantings , or instauration . Glossary : FertilizeFertilize just before Modern growth begins with a complete fertilizer .
