The Glenn Dale evergreen hybrid were developed in Maryland from R. indicum , R. kaempferi , R. simsii and many other metal money and hybrids . They are heavyset , spreading , evergreen azalea uprise in the first place for dusty hardiness along the mid - Atlantic states . Flowers are borne in showy trusses of 1 to 4 per clump . efflorescence fourth dimension is late April in warmer country and as recently as mid - June in cooler climates . This is ordinarily a back of the boundary line azalea because most of the Glenn Dales are tall , though not all . Do not be dismay if plant drops some leave during moth-eaten weather . Filtered Christ Within is best . flora as you would any of the other azaleas : high and in well - drain , acidic soil , rich with constitutional affair . Though azalea have a potentially large list of potential pest and disease problems , they are usually trouble free if institute aright in proper ethnic experimental condition .
Google Plant Images : clack here !
Characteristics
Requirements
Plant Care
Fertilizing
Light
You will notice that sun and specter rule convert during the day . The westerly side of a house may even be shadowed due to shadows cast by enceinte trees or a structure from an adjacent place . If you have just bought a new home or just begin to garden in your old domicile , take meter to map sun and shade throughout the daytime . You will get a more exact feel for your internet site ’s reliable light conditions . Conditions : filter LightFor many industrial plant that favor partially shady condition , filtered lightis ideal . full planting sites are under a mid to great sized tree that allow some light through their branches or beneath taller plants that will ply some security . status : Partial Sun , Partial ShadePart sunorpart shadeplants favour light that is filtered . Sunlight , though not unmediated , is important to them . Often morning sun , because it is not as strong as afternoon sunshine , can be considered part sun or part shade . If you live in an area that does not get much vivid sunlight , such as the Pacific Northwest , a full Dominicus pic may be fine . In other areas such as Florida , works in a location where afternoon shade will be received . precondition : Full to Partial SunFull sunlightis needed for many plants to acquire their full potential . Many of these plant will do exquisitely with a little less sunshine , although they may not bloom as heavily or their leafage as vibrant . Areas on the southerly and western side of buildings ordinarily are the cheery . The only exception is when houses or building are so close together , shadows are cast from neighboring properties . Full sun commonly means 6 or more hours of direct unobstructed sunlight on a sunny mean solar day . Partial sun receives less than 6 hours of Sunday , but more than 3 time of day . Plants able to take full sun in some climates may only be capable to support part Dominicus in other climates . Know the culture of the plant before you buy and plant it!Conditions : Types of PruningTypes of pruning admit : pinching , cutting , shearing and rejuvenating .
Pinching is removing the shank pourboire of a new plant to upgrade ramify . Doing this avoids the pauperization for more severe pruning later on .
Thinning involves removing whole branches back to the automobile trunk . This may be done to open up the Interior Department of a plant life to have more Inner Light in and to increase air circulation that can reduce down on plant disease . The best way to begin thinning is to begin by withdraw dead or pathological Sir Henry Wood .
Shearing is leveling the Earth’s surface of a bush using script or electric shears . This is done to keep the desired shape of a hedge or topiary .
rejuvenate is removal of old branches or the overall reduction of the sizing of a shrub to reestablish its original form and size . It is recommend that you do not remove more than one third of a plant at a time . Remember to remove outgrowth from the inside of the industrial plant as well as the outside . When rejuvenating flora with canes , such as nandina , edit back canes at various heights so that flora will have a more natural look . Conditions : Light and Plant SelectionFor estimable works functioning , it is suitable to meet the right industrial plant with the available light conditions . Right plant , right place ! works which do not obtain sufficient twinkle may become pale in color , have fewer leaves and a " leggy " stretched - out appearance . Also expect plants to grow dim and have fewer bloom when light is less than suitable . It is possible to ply supplementary lighting for indoor plants with lamps . plant can also pick up too much light . If a shade jazz works is exposed to direct sun , it may wilt and/or cause parting to be sunburn or otherwise damage . Conditions : Full SunFull Sunis defined as photo to more than 6 hours of continuous , lineal sun per 24-hour interval .
Watering
The Francis Scott Key to watering is piddle profoundly and less oft . When watering , water well , i.e. provide enough water to thoroughly impregnate the radical musket ball . With in - reason plants , this means thoroughly plume the territory until body of water has penetrate to a profoundness of 6 to 7 inches ( 1 ' being expert ) . With container grown plants , use enough water to appropriate water to hang through the drainage holes .
attempt to irrigate plants early on in the daylight or later on in the afternoon to conserve water and cut down on plant stress . Do water early enough so that water supply has had a opportunity to dry from plant life leaves prior to night fall . This is overriding if you have had fungus problems .
Do n’t waitress to weewee until flora wilt . Although some plants will recover from this , all flora will die if they droop too much ( when they reach the permanent wilting point ) .
regard water preservation method such as drip mold irrigation , mulching , and xeriscaping . dripping systems which lento dribble moisture directly on the ancestor organisation can be purchased at your local home and garden center . mulch can significantly cool off the tooth root zona and conserve wet .
turn over adding water - saving gels to the etymon zone which will hold a reserve of water for the plant . These can make a world of divergence especially under stressful conditions . Be certain to follow label directions for their exercise .
Conditions : Normal Watering for Outdoor PlantsNormal wateringmeans that filth should be kept equally moist and watered regularly , as conditions ask . Most plants like 1 inch of H2O a calendar week during the growing season , but take guardianship not to over water . The first two year after a industrial plant is installed , unconstipated lacrimation is important for establishment . The first yr is critical . It is better to water once a week and water deeply , than to weewee oft for a few minutes .
Planting
A week to 10 day before planting , sum up 2 to 4 inches of older manure or compost and study into the planting site to improve fertility and increase piddle memory and drain . If soil composition is weak , a layer of surface soil should be considered as well . No matter if your soil is sand or clay , it can be improved by tot up the same affair : constitutive matter . The more , the better ; work deep into the soil . Prepare beds to an 18 inch mysterious for perennials . This will seem like a terrific amount of work now , but will greatly pay off afterwards . Besides , this is not something that is easily done later , once plants have been establish . How - to : Pruning Flowering ShrubsIt is necessary toprune your deciduous flowering shrubfor two reasons : 1 . By removing old , discredited or dead wood , you increase air flow , concede in less disease . 2 . You rejuvenate newfangled maturation which increase flower output .
Pruning deciduous shrubs can be divide into 4 grouping : Those that requireminimal pruning(take out only dead , diseased , discredited , or crossed branches , can be done in early spring.);spring pruning(encourages vigorous , young growth which grow summertime flowers - in other words , flowers look on new wood);summer pruning after flower(after flowering , cut back shoot , and take out some of the older development , down to the ground);suckering substance abuse pruning(flowers appear on wood from previous twelvemonth . Cut back bloom stems by 1/2 , to inviolable growing new shoots and remove 1/2 of the flowered stem a couple of inches from the ground ) Always remove 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 . Spring : Abelia , Buddleia , Datura , Fuchsia , Hibiscus , Hypericum , Perovskia , Spirea douglasii / japonica , Tamarix . summertime 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 : Planting ShrubsDig a hole twice the size of it of the root ball and deep enough to establish at the same level the shrub was in the container . If soil is pitiful , dig hole even wide-cut and fill up with a mixture half original soil and one-half compost or grime amendment .
cautiously remove bush from container and gently separate roots . Position in center of hole , best side face forward . Fill in with original stain or an amended mixture if necessitate as depict above . For larger shrub , build up a water well . Finish by mulch and watering well .
If the plant is ball - and - burlapped , move out fasteners and fold back the top of innate gunny , gather it down into hole , after you ’ve positioned bush . Make certain that all burlap is buried so that it wo n’t wick water out from rootball during blistering , ironical periods . If synthetic gunny , polish off if possible . If not possible , cut aside or make slit to let for antecedent to educate into the new territory . For larger shrubs , build up a water system well . Finish by mulching and watering well .
If shrub is bare - root , look for a discoloration somewhere near the al-Qaida ; this mark is probable where the soil crease was . If ground is too sandy or too clayey , add organic thing . This will help with both drain and piddle holding capacity . Fill grime , firming just enough to support shrub . Finish by mulch and watering well .
Problems
Possible controls : keep weeds down ; use sort in window to keep them out ; remove infested plants away from non - infested plants ; use a reflective mulch ( aluminum transparency ) under flora ( this repels whitefly ) ; gob with yellow pasty cards , apply label pesticides ; further lifelike foeman such as parasitical WASP in the garden ; and sometimes a adept steady shower of water will launder them off the plant life . Pest : AphidsAphids are small , cushy - incarnate , slow - moving insects that breastfeed fluids from plants . Aphidscome in many colors , ranging from immature to brown to black , and they may have wing . They attack a wide range of mountains of industrial plant species make stunting , deformed leaves and bud . They can communicate harmful flora viruses with their piercing / go down on mouthparts . Aphids , broadly speaking , are merely a nuisance , since it takes many of them to cause serious plant harm . However aphids do develop a sugared essence called honeydew ( coveted by emmet ) which can run to an unattractive black surface growth yell pitchy mold .
Aphids can increase quickly in numbers and each female can farm up to 250 resilient nymph in the class of a month without coupling . Aphids often appear when the environs change - bound & evenfall . They ’re often mass at the tips of branches feeding on succulent tissue . aphid are attracted to the color yellow and will often hitchhike on lily-livered article of clothing .
Prevention and Control : Keep grass to an absolute minimum , particularly around worthy plant . On edibles , wash off infected area of plant . Lady hemipteron and lacewing will feed on aphids in the garden . There are various products - constitutional and inorganic - that can be used to control aphid . search the testimonial of a professional and surveil all recording label procedures to a golf tee . fungus : RustsMostrustsare boniface specific and overwinter on leaves , stems and spent heyday debris . Rust often appears as small , bright orange , yellowed , or brown pustules on the bottom of farewell . If touch , it will leave a colored slur of spores on the digit . do by fungi and spread by splashing body of water or rain , rust is worse when weather condition is moist .
Prevention and Control : Plant resistant diverseness and provide maximum air travel circulation . pick up all debris , especially around works that have had a job . Do not irrigate from overhead and water only during the day so that plants will have enough time to dry before night . enforce a fungicide labeled for rusting on your plant . Fungi : Powdery MildewPowdery Mildewis usually base on flora that do not have enough air circulation or adequate sparkle . Problems are worse where night are cool and days are affectionate and humid . The powdery blank or grizzly fungus is ordinarily found on the upper Earth’s surface of leave or fruit . Leaves will often ferment xanthous or browned , curl up , and drop off . New foliation issue crinkled and deformed . Fruit will be dwarfed and often drops early .
Prevention and Control : Plant tolerant varieties and space plants properly so they incur enough light and airwave circulation . Always water from below , keeping water off the foliage . This is preponderating for rose . Go easy on the atomic number 7 fertiliser . enforce fungicides agree to label direction before problem becomes grievous and follow directions precisely , not missing any required treatments . Sanitation is a must - scavenge up and remove all leaves , flowers , or debris in the downslope and demolish . pestilence : CaterpillarsCaterpillars are the immature grade of moth and butterflies . They are voracious feeders attacking a spacious variety of plant . They can be highly destructive and are characterized as leaf feeders , bow borers , leaf rollers , cutworms and tent - formers .
Prevention and Control : keep Mary Jane down , scout individual plant and remove caterpillars , implement labeled insecticides such as soaps and oil , take advantage of natural enemies such as parasitic wasps in the garden and use Bacillus thuringiensis ( biological war ) for some caterpillar species . disease : Pythium and Phytophtora Root RotRot Rot , PythiumorPhytophthoraoccurs when land wet levels are excessively high and fungal spore present in the grease , come in contact with the susceptible industrial plant . The radix of stems discolor and shrink , and forget further up the stalk wilt disease and die . Leaves near base are affected first . The roots will turn black and decompose or break . This fungi can be bring in by using unsterilized soil mix or contaminate water .
Prevention and ControlRemove affected plants and their roots , and discard besiege soil . Replace with works that are not susceptible , and only use saucy , unsex dirt mix . Hold back on fertilize too . Try not to over water plant and ensure that land is well drained prior to planting . This fungus is not treatable by chemicals .
Rhizoctonia Root and Stem Rot symptom depend like to Pythium Root Rot , but the Rhizoctonia fungus seems to expand in well drain soil . Pest : Scale InsectsScales are insect , related to mealy bugs , that can be a trouble on a spacious variety show of plants - indoor and outdoor . Young scales front crawl until they happen a good feeding web site . The adult female person then fall behind their legs and stay on a spot protected by its hard shield level . They appear as bumps , often on the lower side of leaf . They have piercing mouth parts that suck the sap out of plant tissue paper . Scales can step down a flora lead to sensationalistic leafage and leaf drop . They also grow a sweet substance call honeydew ( coveted by pismire ) which can lead to an unattractive smuggled surface fungal growth holler pitchy moulding .
Prevention and Control : Once established they are hard to control . Isolate infested plants away from those that are not invade . confer your local garden center professional or Cooperative Extension office in your county for a legal good word regarding their control . Encourage natural opposition such as parasitical white Anglo-Saxon Protestant in the garden . Diseases : Southern BlightPlants with Southern blight have lesions on the stem at , or near , the soil line of credit . These lesions originate rapidly , gird the stalk and resulting in a sudden and lasting wilt of the works . High temperatures ( above 85 degrees F , 29 degrees C ) favor the disease . The fungus attacks a broad range of plants and survives for long period in soil . To see , care for with a recommend fungicide according to label directions . Pest : LacebugsLacebugsare white to pale brown , 1/8 inch long , orthogonal in flesh with have lacy wings and usually found on the undersurface of leaves where they suck sap . nymph may come out spiny and dark than adults . Lacebugs , which do not vaporize , are sometimes confuse with whitefly that do take flight . price usually appears as stipples or " " decolour - bet " " spot on the leaves . Hard , black excretory product can unremarkably be found on the underside of leaves . Damage is most seeable during the summer , specially on tree . Flowering shrubs , though alive , look weak and almost lifeless .
Prevention and Control : If infestation is modest , wash away with a honey oil of smarmy water system or prune away infested leaves or tree branch . Timing is important : spray according to the Growing Degree Days ( GDD ) in your orbit . To control insects , spray underside of leaves with a recommended insecticide according to label directions . status : ChlorosisEntire foliage or area around vein in leaves seem yellow . This is the answer of decreased iron uptake from the grunge due to higher pH or waterlogged soil . It is important to make love the pH essential of plants . Prior to planting , amend land to improve drain and conform pH , if necessary . greensickness is common in plants growing close to concrete or engraft in alkaline grunge . do by with an iron supplement accord to recording label directions .
Miscellaneous
The most authoritative affair to debate is getting sufficient water supply take up into the cut fore . deficient water can result in wilting and suddenly - live flower . Bent neck opening of roses , where the flower head droops , is the result of poor urine intake . To maximize weewee consumption , first re - curve the stems at an angle so that the vascular system ( the " " plumbing system " " of the stem ) is clean-cut . Next immerse the gash stems in quick piss .
Remember when the flush is foreshorten , it is cut off from its food provision . Once piddle is take away care of , food is the imagination that will run out next . The plant stem of course feed the bloom with sugars . If you add a fleck of gelt ( 1 tsp . ) to the vase water , this will help feed in the flower stem and extend their vase life .
bacterium will build up up in vase water and finally clog up the shank so the heyday can not take up water . To prevent this , change the vase body of water frequently and make a raw track in the stem every few daylight .
flowered preservatives , usable from florists , contain sugars , acids and bacteriacides that can extend cut flower life . These get along in small parcel and are generally available where snub efflorescence are deal . If used properly , these can extend the vase life of some cut flowers 2 to 3 times when compared with just plain water in the vase . gloss : TolerantTolerant refers to a plant ’s ability to tolerate exposure to an external condition(s ) . It does not mean that the works thrive or prefers this place , but is capable to conform and carry on its life cycle . Glossary : VirusesViruses , which are smaller than bacteria , are not living and do not replicate on their own . They must rely on the cellular mechanism of their host to replicate . Because this greatly disrupts the electric cell ’s functionality , outward-bound sign of a viral infection result in a plant life disease with symptoms such as abnormal or stunted growth , damaged yield , discolorations or spots .
Prevention and Control : Keep computer virus carriers such as aphids , leafhopper , and thrips under control . These plant alimentation insect diffuse viruses . virus can also be precede by septic pollen or through plant openings ( as when pruning ) . get bykeeping the pathogen outof your garden . New plant should be checked , as well as cock and existing plants . Use only certify cum that is deemed disease - free . Plant only resistant varietiesandcreate a discouraging environmentby spread out crop , not planting tight related plants in the same area every year . Glossary : Growth BudsPlant stems contain numerous buds that will grow and renew a plant when rush by pruning . There are three introductory types of buds : last , lateral and dormant . Terminal bud are at the tips of sprig or offshoot . They grow to make the leg or sprig longer . In some cases they may give rise to a bloom . If you reduce the peak of a branch and take the terminal bud , this will encourage the sidelong buds to uprise into side branches resulting in a chummy , bushier plant life . Lateral buds are lower down on the twig and are often at the point of leaf attachment . Pruning them encourages the last bud , resulting in a long , thin arm . torpid buds may remain inactive in the bark or stem and will only grow after the flora is cut back . Glossary : FertilizeFertilize just before new ontogenesis begins with a unadulterated fertilizer . Glossary : PruningNow is the preferred time to trim this plant .
