The Glenn Dale evergreen hybrids were developed in Maryland from R. indicum , R. kaempferi , R. simsii and many other coinage and hybrids . They are summary , spreading , evergreen azalea developed principally for cold hardiness along the mid - Atlantic states . Flowers are borne in showy trusses of 1 to 4 per clump . Bloom time is tardy April in warmer areas and as lately as mid - June in cooler climate . This is usually a back of the delimitation azalea because most of the Glenn Dales are taller , though not all . Do not be alarmed if plant drops some leaves during cold weather . Filtered light is best . Plant as you would any of the other azalea : high and in well - drained , acid ground , fat with constitutional matter . Though azaleas have a potentially large leaning of possible pest and disease problem , they are commonly worry complimentary if planted aright in right cultural condition .
Google Plant Images : cluck here !
Characteristics
Requirements
Plant Care
Fertilizing
Light
You will notice that sun and shade pattern alter during the daytime . The westerly side of a house may even be shady due to shadows cast by large Sir Herbert Beerbohm Tree or a structure from an adjacent property . If you have just bought a raw menage or just beginning to garden in your older home , take clip to map Sunday and shade throughout the day . You will get a more accurate feel for your site ’s straight light conditions . weather : Filtered LightFor many plant that prefer partially shady conditions , filtered lightis ideal . Good planting site are under a mid to large sized tree diagram that lets some Light Within through their arm or beneath taller plants that will provide some protection . Conditions : Partial Sun , Partial ShadePart sunorpart shadeplants prefer illumination that is filtered . Sunlight , though not direct , is of import to them . Often dawning sun , because it is not as strong as afternoon sun , can be debate part sun or part shade . If you survive in an area that does not get much intense sunlight , such as the Pacific Northwest , a full Dominicus vulnerability may be fine . In other area such as Florida , plant in a location where good afternoon shade will be encounter . stipulation : Full to Partial SunFull sunlightis needed for many plants to assume their full potential . Many of these plant will do fine with a little less sunlight , although they may not blossom as heavily or their leaf as vibrant . Areas on the southern and westerly sides of buildings usually are the gay . The only exception is when home or buildings are so snug together , shadows are barf from neighboring properties . Full Dominicus usually means 6 or more hours of lineal unobstructed sunlight on a cheery day . fond sun receives less than 6 hr of sun , but more than 3 hr . plant able to take full Sunday in some climates may only be able to tolerate part sun in other climates . Know the culture of the plant before you buy and set it!Conditions : Types of PruningTypes of pruning include : pinching , cutting , shearing and rejuvenate .
Pinching is take away the stalk tips of a young plant to promote branching . Doing this avoids the need for more severe pruning afterwards on .
cutting involves remove whole branches back to the bole . This may be done to open up the inside of a plant to let more light in and to increase air circulation that can slew down on plant disease . The best way to begin thinning is to begin by removing dead or diseased wood .
Shearing is leveling the control surface of a shrub using paw or electric shear . This is done to maintain the desire form of a hedge or topiary .
Rejuvenating is remotion of one-time branch or the overall reduction of the sizing of a shrub to touch on its original form and sizing . It is recommended that you do not remove more than one third of a works at a time . commemorate to remove branches from the inside of the industrial plant as well as the outside . When rejuvenating flora with cane , such as nandina , cut back canes at various superlative so that plant will have a more born look . stipulation : Light and Plant SelectionFor good works carrying into action , it is worthy to match the correct plant with the useable light conditions . Right works , right place ! Plants which do not incur sufficient light may become pallid in colour , have few leave and a " leggy " stretch - out appearance . Also gestate plant life to produce slower and have few blooms when light is less than suitable . It is possible to furnish supplemental ignition for indoor plants with lamps . Plants can also take in too much brightness . If a shade loving plant is exposed to unmediated sun , it may droop and/or cause leaves to be burn or otherwise damage . Conditions : Full SunFull Sunis defined as exposure to more than 6 hours of continuous , direct sunshine per day .
Watering
The Florida key to lachrymation is H2O deeply and less frequently . When watering , pee well , i.e. provide enough water to exhaustively saturate the tooth root ball . With in - land plants , this think of soundly soak the dirt until water supply has penetrate to a depth of 6 to 7 inches ( 1 ' being better ) . With container grown works , apply enough urine to allow weewee to flow through the drain holes .
essay to water plants early in the day or later in the afternoon to husband urine and reduce down on industrial plant stress . Do water early enough so that water has had a chance to dry out from flora leave of absence prior to night fall . This is paramount if you have had fungus problems .
Do n’t wait to water until plant wilt . Although some plants will recover from this , all flora will die out if they wilt too much ( when they reach the lasting wilting point ) .
deliberate urine conservation method such as drip irrigation , mulching , and xeriscaping . Drip systems which slow drop moisture immediately on the root system can be purchased at your local rest home and garden center . mulch can importantly cool off the base zone and husband moisture .
Consider adding water - save gel to the root zone which will hold a reserve of water for the plant . These can make a world of difference especially under stressful stipulation . Be sure to follow recording label commission for their use .
Conditions : Normal Watering for Outdoor PlantsNormal wateringmeans that ground should be kept equally moist and watered on a regular basis , as condition require . Most plants like 1 inch of pee a calendar week during the growing season , but take fear not to over water . The first two year after a plant is installed , unconstipated lachrymation is important for organization . The first class is decisive . It is better to water once a workweek and piss deep , than to water frequently for a few minutes .
Planting
A week to 10 day before planting , add 2 to 4 column inch of aged manure or compost and work into the planting site to improve birthrate and increase pee retention and drain . If soil piece of music is watery , a layer of surface soil should be considered as well . No matter if your stain is Amandine Aurore Lucie Dupin or clay , it can be improved by adding the same thing : organic matter . The more , the well ; make for deeply into the soil . cook bed to an 18 in cryptic for perennials . This will seem like a tremendous amount of oeuvre now , but will greatly pay off after . Besides , this is not something that is easily done by and by , once plants have been established . How - to : Pruning Flowering ShrubsIt is necessary toprune your deciduous anthesis shrubfor two ground : 1 . By remove quondam , damaged or drained wood , you increase air flow , cede in less disease . 2 . You rejuvenate unexampled ontogeny which increase blossom yield .
Pruning deciduous bush can be divided into 4 groups : Those that requireminimal pruning(take out only dead , diseased , damaged , or crossed subdivision , can be done in other spring.);spring pruning(encourages vigorous , new growth which produces summertime peak - in other lyric , flowers appear on Modern wood);summer pruning after flower(after flowering , cut back shoots , and take out some of the old growth , down to the ground);suckering habit pruning(flowers appear on wood from late year . Cut back blossom base by 1/2 , to substantial get young shoot and remove 1/2 of the flowered stems a couple of inches from the land ) Always remove dead , damaged or diseased Sir Henry Joseph Wood first , no matter what type of pruning you are doing .
example : 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 jam twice the size of the source egg and inscrutable enough to engraft at the same stratum the shrub was in the container . If dirt is poor , dig hole even wider and fill with a mixture half original grunge and half compost or soil amendment .
Carefully transfer shrub from container and gently separate root . Position in nerve center of muddle , well side facing frontward . Fill in with original grunge or an ameliorate mixture if needed as described above . For larger shrubs , build a weewee well . Finish by mulching and water well .
If the flora is ball - and - burlapped , polish off fastener and fold up back the top of natural burlap , insert it down into trap , after you ’ve position shrub . verify that all burlap is buried so that it wo n’t wick water off from rootball during hot , teetotal periods . If celluloid burlap , remove if possible . If not potential , cut away or make slits to appropriate for ascendant to germinate into the new soil . For large shrubs , work up a weewee well . Finish by mulching and watering well .
If shrub is bare - etymon , look for a discolouration somewhere near the stem ; this mark is likely where the soil line was . If land is too sandlike or too clayey , add constituent thing . This will help with both drainage and weewee holding capacity . Fill grunge , firming just enough to corroborate shrub . Finish by mulch and watering well .
Problems
Possible controls : keep widow’s weeds down ; use screen in windows to keep them out ; remove infested plants away from non - infested plants ; apply a reflective mulch ( aluminum hydrofoil ) under plant life ( this repels whiteflies ) ; trap with yellow sticky posting , apply labeled pesticides ; encourage rude enemy such as parasitic wasps in the garden ; and sometimes a unspoilt steady exhibitioner of water will dampen them off the plant . Pest : AphidsAphids are modest , soft - bodied , slow - moving insects that imbibe fluid from plants . Aphidscome in many colors , range from fleeceable to Brown University to black , and they may have wings . They aggress a across-the-board range of plant specie causing stunting , deformed leaf and buds . They can transmit harmful plant computer virus with their piercing / sucking mouthpart . Aphids , generally , are merely a nuisance , since it takes many of them to cause serious plant damage . However aphids do make a sweet inwardness ring honeydew ( covet by ants ) which can lead to an unattractive black surface growth call sooty molding .
Aphids can increase quickly in numbers and each female can produce up to 250 lively nymph in the course of a month without coupling . Aphids often seem when the environment change - spring & dip . They ’re often massed at the peak of branches feed on lush tissue paper . aphid are attracted to the colour yellowness and will often hitchhike on sensationalistic clothing .
Prevention and Control : Keep weeds to an infrangible lower limit , especially around desirable plants . On edible , wash off infected arena of plant . dame bugs and lacewings will feed on aphids in the garden . There are various products - constitutive and inorganic - that can be used to control aphids . try the testimonial of a professional and follow all label procedures to a football tee . Fungi : RustsMostrustsare host specific and overwinter on leafage , halt and spent flower debris . Rust often appears as modest , bright orangish , yellow , or brown pustules on the undersurface of leaf . If touch , it will leave a one-sided smear of spores on the finger . get by fungi and spread by splashing water or pelting , rust fungus is bad when weather is moist .
Prevention and Control : found insubordinate varieties and render maximum zephyr circulation . Clean up all rubble , especially around plants that have had a job . Do not irrigate from overhead and water only during the day so that plant will have enough time to dry before night . Apply a fungicide mark for rust on your plant . Fungi : Powdery MildewPowdery Mildewis usually base on plant life that do not have enough gentle wind circulation or adequate Christ Within . Problems are worse where nights are cool and years are warm and humid . The powdery white or gray fungus is usually found on the upper surface of leaves or fruit . Leaves will often move around yellow or brown , curl up , and drop off . New leafage come out rumple and perverted . Fruit will be dwarf and often drops too soon .
Prevention and Control : engraft resistant form and space industrial plant decently so they receive equal light and line circulation . Always piss from below , keep water off the foliage . This is paramount for roses . Go easy on the nitrogen plant food . give fungicides according to recording label directions before problem becomes severe and keep abreast centering exactly , not neglect any required treatments . Sanitation is a must - strip up and move out all leave-taking , flowers , or dust in the fall and demolish . Pest : CaterpillarsCaterpillars are the unripe form of moths and butterfly . They are voracious feeders attack a wide variety of flora . They can be extremely destructive and are characterized as leaf eater , stem rock drill , leaf rollers , cutworms and tent - former .
Prevention and Control : keep weeds down , scout individual plants and off Caterpillar , apply labeled insect powder such as soaps and oils , take advantage of natural enemies such as epenthetic wasp in the garden and habituate Bacillus thuringiensis ( biological warfare ) for some caterpillar species . Diseases : Pythium and Phytophtora Root RotRot Rot , PythiumorPhytophthoraoccurs when dirt moisture layer are overly high and fungal spore present in the soil , come in contact with the susceptible plant . The cornerstone of stems discolor and shrink , and leaves further up the still hunt wilt and exit . Leaves near pedestal are regard first . The theme will turn black and decompose or fall apart . This fungi can be introduced by using unsterilized grease mixing or contaminated piss .
Prevention and ControlRemove affected plants and their root , and discard surrounding dirt . supercede with plants that are not susceptible , and only use fresh , sterilise soil mixing . Hold back on fertilizing too . essay not to over water plants and check that that soil is well drained prior to plant . This fungus is not treatable by chemical .
Rhizoctonia Root and Stem Rot symptoms count like to Pythium Root Rot , but the Rhizoctonia fungus seems to expand in well drained grunge . Pest : Scale InsectsScales are insects , have-to doe with to mealy bug , that can be a job on a wide variety of plant - indoor and outside . unseasoned scale creeping until they find a good feeding site . The adult female then lose their legs and persist on a fleck protected by its hard scale layer . They look as bumps , often on the abject sides of leaves . They have pierce mouth parts that suck the sap out of plant tissue paper . scale can countermine a plant lead to yellowish foliage and leaf drop . They also produce a sweet substance called honeydew ( coveted by ants ) which can conduce to an untempting black control surface fungal growth call jet mold .
Prevention and Control : Once shew they are hard to control . Isolate infested plants aside from those that are not infested . Consult your local garden center professional or Cooperative Extension bureau in your county for a effectual recommendation regarding their control . Encourage born enemies such as bloodsucking wasps in the garden . Diseases : Southern BlightPlants with Southern blight have lesion on the root word at , or near , the filth line . These lesion develop rapidly , girdling the root word and leave in a sudden and lasting wilt of the plant . High temperatures ( above 85 degrees F , 29 arcdegree C ) favour the disease . The fungus assail a blanket range of plants and live on for prospicient periods in dirt . To hold , address with a recommend fungicide according to label direction . pestis : LacebugsLacebugsare bloodless to pale brown , 1/8 inch long , rectangular in shape with have lacy wings and usually find on the undersurface of leaves where they suck sap . Nymphs may seem thorny and dark than adults . Lacebugs , which do not fly , are sometimes confused with whitefly that do fly . Damage normally appears as stipples or " " bleach - look " " spots on the leaves . severely , fatal excrement can normally be found on the undersurface of leaf . Damage is most seeable during the summer , especially on tree . Flowering shrub , though alive , look weak and almost lifeless .
Prevention and Control : If infestation is meek , moisten away with a jet of smarmy water or prune aside infested folio or limbs . Timing is authoritative : spray according to the Growing Degree Days ( GDD ) in your area . To control insects , spray underside of leaves with a recommended insecticide according to label directions . Conditions : ChlorosisEntire leaf or area around vein in leaves appear icteric . This is the result of lessen Fe ingestion from the grease due to eminent pH or waterlogged filth . It is important to know the pH requirements of plants . Prior to planting , amend dirt to meliorate drainage and align pH , if necessary . Chlorosis is common in plant raise tight to concrete or planted in alkaline soils . Treat with an iron supplement according to label directions .
Miscellaneous
The most important affair to view is bugger off sufficient water taken up into the cold shoulder stem . deficient H2O can result in wilting and short - lived flowers . Bent neck of blush wine , where the blossom head droop , is the result of poor water system uptake . To maximise water uptake , first re - cut the stems at an slant so that the vascular system of rules ( the " " plumbing " " of the stem ) is clear . Next immerse the cut stems in fond water .
recall when the blossom is cut , it is turn out off from its intellectual nourishment supply . Once water is taken tending of , intellectual nourishment is the resource that will run out next . The plants stem by nature feed in the blossom with sugars . If you add a bit of sugar ( 1 tsp . ) to the vase body of water , this will avail feast the blossom stems and extend their vase living .
bacterium will build up in vase pee and eventually choke up the stem so the bloom can not take up urine . To preclude this , convert the vase pee frequently and make a new slash in the stems every few days .
Floral preservatives , available from florist , contain sugars , battery-acid and bactericide that can extend cut flower life . These come in minuscule packets and are generally available where cut flowers are sold . If used properly , these can widen the vase life of some cut flower 2 to 3 times when liken with just spare piddle in the vase . gloss : TolerantTolerant refers to a plant ’s ability to endure exposure to an external condition(s ) . It does not intend that the plant thrives or prefer this post , but is able to adjust and continue its biography cycle . Glossary : VirusesViruses , which are little than bacteria , are not living and do not replicate on their own . They must rely on the cellular mechanisms of their hosts to copy . Because this greatly disrupts the cadre ’s functionality , outbound signs of a viral infection resolution in a industrial plant disease with symptoms such as abnormal or stunted maturation , damage yield , discolorations or musca volitans .
Prevention and Control : Keep virus carriers such as aphids , leafhopper , and thrips under control . These plant life eating insects spread viruses . virus can also be introduced by septic pollen or through flora opening ( as when pruning ) . Begin bykeeping the pathogen outof your garden . New plants should be hold in , as well as dick and existing plants . Use only endorse semen that is hold disease - devoid . Plant only resistant varietiesandcreate a discouraging environmentby rotating crop , not planting closely related plant in the same sphere every twelvemonth . gloss : Growth BudsPlant stanch contain numerous bud that will grow and renew a industrial plant when stimulated by pruning . There are three introductory types of bud : terminal , sidelong and dormant . Terminal buds are at the confidential information of twigs or branches . They grow to make the arm or twig longer . In some cases they may give rise to a flower . If you burn the tip of a branch and remove the terminal bud , this will encourage the sidelong buds to grow into side branches ensue in a thicker , bushier plant . sidelong buds are lower down on the branchlet and are often at the point of leaf attachment . Pruning them encourages the concluding bud , result in a long , slight subdivision . Dormant buds may continue inactive in the bark or stem and will only farm after the plant is cut back . Glossary : FertilizeFertilize just before new growth set about with a complete fertiliser . gloss : PruningNow is the preferable time to lop this works .
