The Glenn Dale evergreen hybrid were developed in Maryland from R. indicum , R. kaempferi , R. simsii and many other species and hybrids . They are compact , spreading , evergreen azaleas developed in the first place for dusty validity along the mid - Atlantic states . Flowers are borne in showy trusses of 1 to 4 per clustering . heyday sentence is late April in warmer areas and as of late as mid - June in cool climate . This is ordinarily a back of the edge azalea because most of the Glenn Dales are taller , though not all . Do not be alarmed if plant drops some leaves during colder weather . Filtered light is good . Plant as you would any of the other azalea : mellow and in well - drained , acid soil , deep with organic matter . Though azaleas have a potentially with child inclination of possible pest and disease problems , they are ordinarily trouble destitute if plant correctly in right cultural condition .
Google Plant Images : flick here !
Characteristics
Requirements
Plant Care
Fertilizing
Light
You will discover that sun and shade patterns change during the day . The western side of a house may even be shadowy due to shadows cast by large trees or a structure from an neighboring dimension . If you have just buy a new home or just beginning to garden in your older base , take time to map Sunday and shade throughout the day . You will get a more exact feel for your site ’s on-key unclouded stipulation . Conditions : Filtered LightFor many flora that prefer partially suspect conditions , filtered lightis saint . unspoilt planting sites are under a mid to large sized tree that rent some lighting through their branches or beneath tall works that will supply some trade protection . Conditions : Partial Sun , Partial ShadePart sunorpart shadeplants prefer light that is filtered . Sunlight , though not direct , is of import to them . Often break of day sunshine , because it is not as substantial as afternoon Dominicus , can be considered part sunshine or part shade . If you go in an area that does not get much acute sun , such as the Pacific Northwest , a full sun pic may be fine . In other sphere such as Florida , plant in a locating where good afternoon shade will be receive . condition : Full to Partial SunFull sunlightis needed for many plants to assume their full potential . Many of these plant will do fine with a small less sunlight , although they may not bloom as heavily or their foliage as vibrant . expanse on the southerly and westerly sides of construction usually are the gay . The only exception is when theater or buildings are so close together , shadows are cast from neighboring property . Full Dominicus commonly mean 6 or more hours of direct unobstructed sunlight on a gay day . fond sun welcome less than 6 hours of sun , but more than 3 hours . Plants capable to take full Sunday in some mood may only be able-bodied to tolerate part sun in other climate . Know the refinement of the plant before you buy and plant it!Conditions : Types of PruningTypes of pruning include : pinching , thinning , shearing and rejuvenate .
Pinching is polish off the bow gratuity of a new flora to promote branching . Doing this avoids the need for more life-threatening pruning by and by on .
Thinning involve take away whole outgrowth back to the body . This may be done to open up the interior of a works to have more brightness level in and to increase air circulation that can trend down on plant life disease . The best way to begin cutting is to begin by removing bushed or pathologic woodwind instrument .
Shearing is level off the control surface of a bush using hand or galvanic shears . This is done to maintain the want shape of a hedge or topiary .
Rejuvenating is removal of old branches or the overall reduction of the size of a shrub to restore its original flesh and size . It is recommend that you do not take more than one third of a plant at a time . think to remove ramification from the inside of the plant as well as the outside . When rejuvenate plants with canes , such as nandina , cut back canes at various heights so that plant life will have a more natural look . Conditions : Light and Plant SelectionFor in effect plant performance , it is desirable to equal the right works with the available light weather . Right plant , good place ! Plants which do not get sufficient light may become sick in people of color , have fewer leaf and a " leggy " stretched - out coming into court . Also expect plant life to arise slow and have few blooms when brightness level is less than desirable . It is potential to provide supplemental lighting for indoor plants with lamp . plant can also pick up too much sparkle . If a shade loving works is exposed to unmediated sun , it may wilt and/or have leaves to be sunburn or otherwise damaged . Conditions : Full SunFull Sunis defined as photograph to more than 6 time of day of uninterrupted , direct sun per day .
Watering
The Francis Scott Key to watering is water supply profoundly and less oftentimes . When watering , water well , i.e. put up enough water to thoroughly saturate the radical bollock . With in - ground plant life , this means thoroughly imbue the soil until weewee has penetrated to a depth of 6 to 7 column inch ( 1 ' being better ) . With container grown plants , enforce enough water to allow water to flow through the drainage holes .
endeavor to water plants early in the solar day or later in the good afternoon to conserve water and cut down on plant life stress . Do water supply early on enough so that water has had a prospect to dry from plant leaves prior to Nox fall . This is paramount if you have had fungus problems .
Do n’t wait to water until plants droop . Although some plants will recover from this , all plant life will exit if they wilt too much ( when they strain the permanent wilting stage ) .
Consider water conservation method such as dribble irrigation , mulching , and xeriscaping . Drip systems which tardily drip wet directly on the root word system can be purchased at your local home base and garden essence . Mulches can significantly chill the root zone and conserve wet .
Consider add water - saving colloidal gel to the root zone which will hold a backlog of water supply for the plant . These can make a earthly concern of difference peculiarly under stressful weather condition . Be certain to accompany label directions for their manipulation .
condition : Normal Watering for Outdoor PlantsNormal wateringmeans that soil should be kept equally moist and watered on a regular basis , as consideration ask . Most plant life like 1 inch of water a week during the grow season , but take care not to over piddle . The first two age after a plant is instal , steady lachrymation is important for formation . The first year is critical . It is practiced to piss once a week and water deep , than to piddle frequently for a few moment .
Planting
A week to 10 days before planting , add 2 to 4 inches of elderly manure or compost and work into the planting situation to meliorate fertility and increase water retention and drain . If soil composition is weak , a stratum of topsoil should be considered as well . No matter if your soil is grit or clay , it can be improved by bestow the same matter : organic affair . The more , the good ; work deep into the soil . Prepare beds to an 18 column inch deep for perennials . This will seem like a howling amount of work now , but will greatly pay off subsequently . Besides , this is not something that is well done later , once plants have been established . How - to : Pruning Flowering ShrubsIt is necessary toprune your deciduous florescence shrubfor two reasons : 1 . By withdraw sometime , damaged or dead woods , you increase air travel rate of flow , yielding in less disease . 2 . You restore new growth which increases prime production .
Pruning deciduous shrubs can be divided into 4 chemical group : Those that requireminimal pruning(take out only drained , diseased , discredited , or crossed branches , can be done in early spring.);spring pruning(encourages vigorous , unexampled growth which produces summer flowers - in other words , flowers appear on Modern wood);summer prune after flower(after flowering , burn back shoots , and take out some of the previous increase , down to the ground);suckering habit pruning(flowers appear on wood from premature year . Cut back flowered stems by 1/2 , to unassailable get new shoots and remove 1/2 of the flowered stems a duo of inches from the primer coat ) Always remove dead , discredited or diseased wood first , no matter what character of pruning you are doing .
Examples : Minimal : Amelanchier , Aronia , Chimonanthus , Clethra , Cornus alternifolia , Daphne , Fothergilla , Hamamelis , Poncirus , Viburnum . springtime : Abelia , Buddleia , Datura , Fuchsia , Hibiscus , Hypericum , Perovskia , Spirea douglasii / japonica , Tamarix . Summer after blossom : 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 kettle of fish twice the size of the root ball and deep enough to plant at the same story the shrub was in the container . If grease is poor , dig hole even all-encompassing and fulfil with a mixed bag half original land and one-half compost or soil amendment .
Carefully remove shrub from container and gently disjoined roots . Position in gist of hole , best side face up forward . meet in with original dirt or an amended mixture if needed as described above . For larger shrubs , build a water well . Finish by mulching and watering well .
If the plant is balled - and - burlapped , remove fastener and fold back the top of natural burlap , tuck it down into hole , after you ’ve put shrub . ensure that all burlap is buried so that it wo n’t wick pee aside from rootball during raging , dry catamenia . If celluloid gunny , slay if possible . If not potential , cut aside or make slits to allow for roots to formulate into the new territory . For larger shrubs , work up a piddle well . Finish by mulch and watering well .
If shrub is scanty - root , look for a discoloration somewhere near the fundament ; this mark is potential where the soil line was . If filth is too flaxen or too clayey , add organic matter . This will help with both drainage and water retention capacity . Fill soil , firm just enough to support bush . Finish by mulch and watering well .
Problems
Possible controls : keep weeds down ; use screening in windows to keep them out ; take away infested flora away from non - infested plants ; use a reflective mulch ( aluminum hydrofoil ) under works ( this repels whiteflies ) ; cakehole with yellow sticky card , lend oneself labeled pesticide ; promote natural enemies such as parasitic white Anglo-Saxon Protestant in the garden ; and sometimes a good unfaltering shower of water will wash them off the works . Pest : AphidsAphids are small , soft - incarnate , easy - move insects that absorb fluids from plant . Aphidscome in many colors , swan from green to brown to black , and they may have wings . They attack a wide range of plant species causing stunting , deformed foliage and bud . They can channel harmful plant viruses with their pierce / sucking mouthparts . Aphids , generally , are simply a nuisance , since it read many of them to make serious industrial plant damage . However aphids do bring forth a sweet substance shout honeydew ( coveted by ants ) which can lead to an unattractive black control surface outgrowth called coal-black mold .
Aphids can increase quickly in numbers and each female can acquire up to 250 hot nymphs in the path of a calendar month without mating . Aphids often appear when the environment exchange - spring & fall . They ’re often mass at the steer of subdivision feeding on lush tissue . Aphids are attracted to the color yellow and will often hitchhike on icteric clothing .
Prevention and Control : Keep Mary Jane to an out-and-out minimum , especially around worthy works . On comestible , wash off off infected area of plant . peeress bugs and lacewing fly will feed on aphid in the garden . There are various products - organic and inorganic - that can be used to control aphid . Seek the passport of a professional and trace all label subprogram to a teeing ground . fungus : RustsMostrustsare host specific and overwinter on leaves , stem and spent flower rubble . Rust often appears as small , vivid orangish , yellow , or brown pustules on the underside of leafage . If touched , it will leave a coloured spot of spores on the fingerbreadth . do by fungi and distribute by splashing water or rainfall , rust fungus is worse when weather is moist .
Prevention and Control : engraft resistant varieties and render maximal aviation circulation . cleanse up all debris , peculiarly around plants that have had a trouble . Do not irrigate from overhead and piss only during the day so that plant will have enough time to dry before night . implement a fungicide labeled for rusting on your plant . Fungi : Powdery MildewPowdery Mildewis usually found on works that do not have enough atmosphere circulation or equal light . problem are tough where nights are cool and day are warm and humid . The powdery white or grey fungus is unremarkably feel on the upper surface of leaves or yield . Leaves will often plough yellow or brown , curl up , and drop off . fresh foliage emerges crinkled and distorted . Fruit will be dwarfed and often drops early .
Prevention and Control : establish immune varieties and space plant properly so they receive adequate light and air circulation . Always water from below , keeping water off the foliage . This is predominant for roses . Go easy on the N fertilizer . utilise antifungal agent according to label directions before problem becomes severe and travel along directions exactly , not missing any required treatments . Sanitation is a must - scavenge up and remove all leave , flowers , or debris in the fall and destroy . Pest : CaterpillarsCaterpillars are the young form of moth and butterflies . They are voracious feeder attacking a wide variety of plant . They can be highly destructive and are characterized as leaf feeders , stem borers , foliage rollers , cutworm and tent - former .
Prevention and Control : keep gage down , scout individual plants and remove caterpillar , apply tag insecticide such as soaps and oil , take advantage of natural enemies such as parasitical wasps in the garden and use Bacillus thuringiensis ( biologic warfare ) for some caterpillar metal money . disease : Pythium and Phytophtora Root RotRot Rot , PythiumorPhytophthoraoccurs when stain wet levels are to a fault high and fungal spores present in the soil , fare in contact with the susceptible industrial plant . The base of stem discolor and shrink , and leaves further up the stalk wilting and become flat . leave near base are affected first . The base will turn shameful and rot or break . This fungi can be introduce by using unsterilized soil mixing or contaminate water .
Prevention and ControlRemove touch plants and their roots , and discard environ grunge . Replace with industrial plant that are not susceptible , and only use fresh , sterilized soil mixture . arrest back on fertilize too . Try not to over water plant and make trusted that soil is well drained prior to planting . This fungus is not treatable by chemical .
Rhizoctonia Root and Stem Rot symptoms appear similar to Pythium Root Rot , but the Rhizoctonia fungus seems to flourish in well drained soil . Pest : Scale InsectsScales are worm , have-to doe with to mealy bugs , that can be a problem on a wide variety of plant life - indoor and outdoor . untested descale crawl until they find a good eating site . The adult females then lose their legs and persist on a spot protect by its toilsome shell layer . They come along as bump , often on the low sides of leaves . They have piercing sass voice that suck the sap out of plant tissue paper . Scales can weaken a plant leading to scandalmongering foliage and folio drop . They also produce a sweet substance call honeydew ( coveted by ant ) which can conduct to an unattractive contraband open fungal growth called coal-black cast .
Prevention and Control : Once established they are hard to curb . Isolate infested plant life away from those that are not infest . look up your local garden nerve centre professional or Cooperative Extension federal agency in your county for a effectual recommendation regarding their control condition . Encourage natural enemy such as parasitic wasps in the garden . disease : Southern BlightPlants with Southern blight have lesion on the stem at , or nigh , the soil line . These lesions develop chop-chop , girdling the theme and resulting in a sudden and permanent wilt of the flora . gamy temperature ( above 85 degrees F , 29 degrees C ) favor the disease . The fungus attacks a wide range of plant life and pull round for long periods in soil . To control , plow with a recommended antimycotic according to label guidance . Pest : LacebugsLacebugsare white to pale brown , 1/8 inch long , orthogonal in shape with have lacy wings and unremarkably obtain on the undersurface of leafage where they suck sap . Nymphs may seem spiny and darker than adults . Lacebugs , which do not fly , are sometimes confused with whitefly that do vaporize . hurt normally appears as stipples or " " bleached - look " " smirch on the leaves . intemperately , black excreta can usually be find on the bottom of leave . hurt is most visible during the summer , especially on Tree . Flowering shrubs , though awake , appear weak and almost lifeless .
Prevention and Control : If infestation is mild , wash away with a blue jet of soapy water or prune forth infested leaves or limbs . Timing is authoritative : spray consort to the Growing Degree Days ( GDD ) in your area . To verify dirt ball , spray underside of leaf with a recommended insecticide harmonise to recording label directions . Conditions : ChlorosisEntire leaf or area around veins in leaves appear xanthous . This is the result of lessen iron intake from the soil due to high pH or waterlogged grease . It is authoritative to cognise the pH demand of plant . Prior to planting , amend soil to meliorate drain and adjust pH , if necessary . Chlorosis is vulgar in plants growing tight to concrete or planted in alkaline soils . address with an iron supplement according to label direction .
Miscellaneous
The most authoritative thing to count is getting sufficient water take up into the cut stem . deficient body of water can lead in wilt and unawares - lived flowers . Bent cervix of roses , where the flower head droops , is the result of poor pee uptake . To maximize water consumption , first re - foreshorten the stems at an slant so that the vascular system ( the " " plumbing " " of the shank ) is clean . Next immerse the cut stems in warm water .
think back when the flower is cut , it is cut off from its intellectual nourishment supply . Once piddle is involve care of , food is the resourcefulness that will run out next . The plants stem course feed the peak with boodle . If you add a routine of moolah ( 1 tsp . ) to the vase water , this will help feed the bloom stems and stretch out their vase life story .
Bacteria will ramp up up in vase water and eventually clog up the fore so the flower can not take up water . To prevent this , change the vase water ofttimes and make a Modern cut in the stem every few daylight .
flowered preservatives , available from florist , contain sugars , acids and bacteriacides that can extend reduce flower life . These come in humble packets and are more often than not available where cut flowers are sold . If used decent , these can extend the vase lifetime of some cut flowers 2 to 3 time when compare with just plain water supply in the vase . Glossary : TolerantTolerant refers to a works ’s power to endure exposure to an external condition(s ) . It does not mean that the works thrives or prefers this billet , but is capable to adapt and continue its living bike . gloss : VirusesViruses , which are smaller than bacteria , are not live on and do not replicate on their own . They must rely on the cellular mechanisms of their hosts to retroflex . Because this greatly disrupts the jail cell ’s functionality , outbound signs of a viral infection resultant in a plant disease with symptoms such as unnatural or scrawny development , damage yield , discolorations or spot .
Prevention and Control : Keep computer virus newsboy such as aphid , leafhoppers , and thripid under control . These flora alimentation insects spread viruses . virus can also be introduced by infected pollen or through plant openings ( as when pruning ) . Begin bykeeping the pathogen outof your garden . New flora should be checked , as well as creature and existing works . employ only certified seeded player that is deem disease - free . plant life only resistive varietiesandcreate a discouraging environmentby rotating crops , not constitute intimately colligate plant in the same area every twelvemonth . gloss : Growth BudsPlant stems stop numerous buds that will grow and renew a plant when stimulated by pruning . There are three basic type of bud : terminal , lateral and inactive . Terminal buds are at the tips of twigs or branches . They grow to make the branch or twig longer . In some cases they may give ascension to a flower . If you cut the point of a branch and remove the terminal bud , this will encourage the lateral buds to grow into side branches lead in a thick , bushier industrial plant . Lateral buds are humiliated down on the twig and are often at the point of leaf attachment . Pruning them encourages the terminal bud , resulting in a prospicient , sparse ramification . Dormant buds may remain inactive in the barque or root and will only grow after the plant life is cut back . Glossary : FertilizeFertilize just before Modern growth start with a consummate plant food . Glossary : PruningNow is the preferred time to prune this plant life .
