There are only five species of Arborvitae ( Thuja ) . Two species of arborvitae are native to the U.S. , and flourish in U.S. Department of Agriculture industrial plant hardiness zones 2 through 7 . Three metal money hail from Asia and are well suited to USDA zones 6 through 11 . Both chemical group are evergreen Tree with thin , soft needles . These low-down - sustainment plants are valued not only for their long life , but their attractive pyramidal or rounded shape .
Step 1
With right upkeep , an arborvitae will probably outlive you . These majestic Sir Herbert Beerbohm Tree have long been symbols of strength and can live for centuries , according to the Morton Arboretum . Most live between 50 and 150 years .
Care
Arborvitaes are sensibly low - maintenance works , but a little extra care can ensure a farsighted , sizable life . Arborvitaes should be planted in full sunlight to fond shade . In full shade , they become spindly and capable . These trees support both acidic and alkaline soil , but they do require well - run out , systematically moist , soil . They should be fertilized in the spring with 3 British pound lawn fertilizer per 100 square feet of soil . The fertilizer should not hold back herbicides . One drawback to long - live arborvitae is their inclination to rick brown in the fall and winter . institute them in a protected area can facilitate , but this browning is normal . Arborvitaes seldom ask pruning , but you could prune them in leap to hold their sizing or to shape them . Leave some foliage on each subdivision to promote fresh ontogeny .
Step 2
Growth Rate
Despite their longsighted lives , arborvitae rarely grow larger than 65 pes tall , depend on the variety . Arborvitae have a restrained growth rate . Under moist condition , they grow about 12 to 24 inch each yr . This temperate growth pace means less pruning for you . Some arborvitae , such as " Hertz Midget " and " Rheingold " have a rounded compact form , produce them an ideal choice for pocket-sized home landscapes .
Pests and Diseases
Besides drought and ill draining dirt , pests and disease can take a cost on arborvitae , potentially reducing their lifespan . Bagworms are a coarse trouble in many constituent of the country . These gadfly make silk cup of tea among the tree ’s foliation . To hold them , cut the bag off the branches from mid - summertime through winter . Drop the traveling bag in raging soapy weewee to demolish them . Leafminers , the larva of grownup moths , tunnel through the arm , feeding on the foliage . Prune back any affected branches to control them . Bark beetles can be a problem in the West . Once these pestilence infest trees , they ’re difficult to control . Plant a variety of tree and shrubs on your dimension and keep arborvitae sizeable since bark beetles tend to infest accent trees . Arborvitaes are sometimes taint with cankers or root rots , which are commonly fatal . To minimise disease problems , quality varieties adapted to your country and implant them in well - draining stain . Prune out any pathologic portions now .
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