decorative olives unremarkably have darker folio coloration than commercial change . They sometimes produce no fruits or fruits with downhearted or no commercial time value . The fruits feast birds or spoil easily , making them inapplicable for enceinte - plate output .
Ornamental olivesusually have blue leaf colors than commercial-grade motley . They sometimes develop no fruits or yield with downhearted or no commercial-grade time value . The fruits feed birds or bollocks easily , making them inapplicable for gravid - scale production . Fruits can drop and stain walkways and wall , so fruitless trees make sound ornamental plant .
Swan Hill
The Swan Hill olive cultivar originate from Northern Victoria , Australia . In 1962 , Dr. Hudson T. Hartmann , Ph.D. of the University of California happen out that a Sir Herbert Beerbohm Tree had not bring forth fruit for at least 30 years and analyze the cultivar for eight year . Unlike most Olea europaea cultivar , the Swan Hill give rise no perfect flowers , which are flowers with both male and distaff part . As a result , it can not raise any fruit and will not cause any nuisance from dropped fruits that discolor concrete , stick to shoes and pull in birds . The Swan Hill cultivar has gray - green leaves and develops a gnarled tree trunk and outgrowth arrangement as it grows aged .
Russian
The Russian olive entered the key and western United States in the late 1800s . masses first used it as an ornamental tree and a windbreak , then it spread into the wild . A large shrub or minor Sir Herbert Beerbohm Tree , the Russian olive tree has smooth and gray bark that later changes to become rigid and wrinkle . It has barbellate branches that lead to leaf in elliptical to lanceolate configuration . The dull green - to - grizzly leaves measure 1 to 3 inches long and 1/2 inch wide . The leaves have scale of measurement and have a silver color on the undersurface . The pocket-sized , silvery - brown buds have scales all over . The yellowish blossom bloom in mid - summertime and the fruit maturate from August to October , then die hard throughout winter . These yield resemble Charles Edward Berry and evaluate about 1/2 in . The fruits appear lily-livered when young and bend reddish as they mature . Although dry , the yield are edible .
New Mexico
Native to the Southwest , the New Mexico olive tree diagram grows 10 to 12 foot tall . It has many body and placid green leafage . The leave measure about 1 inch retentive and often curl because of attacks by eriophyid mites . Some plants have both manlike and female flowers and produce glum gamy fruits . The 1/4 - inch fruits feed birds and often set down to dirt walkways and walls .
Ascolano
The ascolano Olea europaea tree diagram develop upright with a tough stem . It has green leaf that slightly twist . It grow larger than many other cultivar . It bears olives that have a touchy taste , but these olives bruise easily . Bruised olive become inedible , so take extra care when harvesting . The fruit can produce a Light Within and ticklish oil . compare to other Tuscan olive cultivar , ascolano is the most stale - brave .
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