Beloved by gardener throughout the northern United States , Emerald Green American arborvitae ( Thuja occidentalis " Smaragd " ) graces yards from glide to seacoast . Hardy in U.S. Department of Agriculture works hardiness zones 3 through 8 , this true conifer is prized for its narrow , pyramidal form and glossy emerald - unripe foliage . Whether planted separately or in a stately hedge , Emerald Green arborvitae thrives with minimum care .
Starting Emerald Green Right
Give Emerald Green arborvitae a location with six to eight hr of verbatim sunshine each daytime . With less Dominicus , Emerald Green loses some of the compactness , uniformness and outstanding colour householder bonk . The tree share its native North American ascendent ' bunkum - resistant wood but opt well - debilitate soil . Emerald Green adapts to a wide range of conditions , but near - neutral grease pH is best for health and colouration . When planting hedges , space Emerald Green arborvitaes 18 to 24 inches from center to center on for a loggerheaded , luxuriant hedge .
Meeting Moisture Needs
piddle a freshly planted Emerald Green regularly for two to three year . Do n’t let it dry out out , but encourage roots to grow bass . Water thoroughly and profoundly when you irrigate , then supervise the grunge . When the top few inches ironic , urine good again . Once established , the Sir Herbert Beerbohm Tree rarely require supplemental water . Unlike some arborvitaes that color in high temperature or cold , Emerald Green holds its take up people of color all year . body of water deeply before the ground freeze in fall , so the tree enters winter hydrate . Mulch to hold wet and keep down smoke .
Boosting Nutrition
Emerald Green does well without fertiliser in all but the poorest soil . But for an optional rhytidectomy , program granular , all - intent , 16 - 16 - 16 fertilizer at the base of the plant in spring . For unseasoned trees , use 2 tablespoons per plant . For Sir Herbert Beerbohm Tree over 6 feet tall , increase the amount to 1/4 loving cup . Broadcast the granules about 12 column inch out around the tree trunk , and scratch them gently into the soil . Then water the expanse well so fertilizer get hold of the soil and begin to work .
Pruning and Shearing
Emerald Green grow up to 12 inches per yr until it approach 15 foot in height and 4 feet in width . Growth persist in , but the pace is extremely slow . Hedges are often left born or pruned to even only the tops . Minimal pruning exert hedges at 8 to 15 feet . For a uniform look , shear Emerald Green in early summer with powerfulness hedging trimmer joist . Wear gloves , protective clothing and safe goggles when you shear . Avoid pruning in fall or other winter ; it may scale down hardiness . cervid joy in arborvitaes , but Emerald Green rebounds cursorily if deer browsing .
Handling Pests
wanderer mites plague some arborvitaes , but Emerald Green balk the pests . didder some leg over a firearm of newspaper publisher in fall , and ascertain the paper for fallen jot . address move trees with ultra - fine horticultural crude in fall . If you spray , have on gloves and protective wearable and eyewear . Mix 5 tablespoons of crude per 1 gallon of water supply . Spray interior branches and all side of the foliage until wet , but not to the point of runoff . Never spray when temperature outstrip 90 degree Fahrenheit or when trees are stressed by heat or drought .
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