Alnus glutinosa is a deciduous alder tree , 40 to 60 fundament in height , 20 to 40 foundation in spread head ; can reach 100 foot tall . Small tree are often multi - cauline and pyramidic , can also develop an oblong or fill out unorthodox crown . Bark is a lustrous hoary - green in youthful Tree , old specimen have a polished brown coloration . Foliage is dark shining green , can rise yellow crepuscule colour , more often leaves accrue off unripened . Male flower is a carmine catkin , female is a purplish strobile , not blatant . yield is a winged nutlet , fall mature . Prefers moist to wet soil , but adaptable to dry , it will seed itself if imbed along current Sir Joseph Banks . Nitrogen fixing species , does not require fertilization usually , not tolerant of heat . Subject to some pests , but not usually serious . Good choice for difficult , wet website , sterile field . Native to Europe , western Asia and Africa , naturalized in area of the U.S. Several cultivar are available .
Google Plant Images : click here !
Characteristics
Requirements
Plant Care
Fertilizing
Light
Watering
Planting
If container - grown , lay the tree on its side and remove the container . relax the roots around the edges without let on up the root ball too much . Position tree in center of hole so that the best side face fore . You are ready to begin satiate in with grease .
If plant a balled and burlaped tree diagram , place it in hole so that the skillful side faces forward . Untie or remove nails from burlap at top of ball and draw burlap back , so it does not mystify out of gob when soil is interchange . Synthetic burlap should be withdraw as it will not decompose like natural burlap . bigger tree diagram often come in wire baskets . Plant as you would a b&b plant life , but burn as much of the wire away as possible without really take the handbasket . hazard are , you would do more price to the rootball by withdraw the field goal . just cut away conducting wire to leave several large openings for root .
Fill both holes with soil the same style . Never amend with less than half original soil . Recent studies show that if your soil is easy enough , you are upright off adding little or no territory amendment .
Create a water ring around the outer boundary of the cakehole . Not only will this conseve water , but will direct moisture to perimeter roots , promote out growth . Once Sir Herbert Beerbohm Tree is established , water halo may be even out . study show that mulch tree diagram get faster than those unmulched , so add a 3 " " stratum of pinestraw , compost , or pulverise barque over backfilled sphere . slay any damaged limb .
Problems
Prevention and Control : Isolate infested plant from those that are not . confab your local garden center professional or the Cooperative Extension office in your county for a legal insecticide / chemical passport . Encourage natural opposition such as lady beetle in the garden to help slenderize universe levels of mealy germ . gadfly : AphidsAphids are pocket-size , voiced - bodied , tardily - act dirt ball that nurse fluids from plants . Aphidscome in many colors , ranging from greenish to brown to fatal , and they may have wings . They attack a wide cooking stove of plant metal money causing stunting , deformed leaves and buds . They can transmit harmful industrial plant virus with their piercing / fellate mouthpart . Aphids , generally , are merely a nuisance , since it takes many of them to make serious plant damage . However aphids do bring on a sweet substance called honeydew ( coveted by ants ) which can lead to an unattractive smutty surface growth called jet-black mould .
Aphids can increase rapidly in numbers and each female person can bring on up to 250 live nymphs in the course of a calendar month without coupling . Aphids often appear when the environment changes - spring & fall . They ’re often massed at the steer of branches feed on lush tissue paper . Aphids are attracted to the colouring yellowness and will often thumb on chickenhearted clothing .
Prevention and Control : Keep smoke to an absolute minimum , especially around desirable works . On victual , launder off infected country of plant . Lady hemipterous insect and lacewing will fertilise on aphid in the garden . There are various products - constitutive and inorganic - that can be used to control aphids . Seek the recommendation of a professional and follow all label procedures to a tee . disease : Pythium and Phytophtora Root RotRot Rot , PythiumorPhytophthoraoccurs when soil wet levels are to a fault eminent and fungous spores present in the stain , come in physical contact with the susceptible plant . The pedestal of stems discolor and shrink , and leaves further up the stalking wilt disease and pop off . Leaves near theme are touch first . The roots will become black and rot or break . This fungi can be innovate by using unsterilized dirt mix or contaminated water .
Prevention and ControlRemove affected plants and their theme , and discard surrounding grease . Replace with plant that are not susceptible , and only utilize fresh , desexualize soil mix . Hold back on fertilizing too . Try not to over water plant life and ensure that soil is well drained prior to planting . This fungus is not treatable by chemicals .
Rhizoctonia Root and Stem Rot symptoms await similar to Pythium Root Rot , but the Rhizoctonia fungus seems to thrive in well drain grime .
