Pyrus ussuriensis mountain frost bailfrost from nvk. Ars germplasm resources information network pyus2 calphotos pyus2 integrated taxonomic information system pyus2. It is characterized by its ovoid, subglobose, or ellipsoid fruit, longer fruiting pedicels 24 cm and tomentose leaves and corymb. Pyrus calleryana are one of the most popular species however other ornamental pear varieties pyrus ussuriensis and salicifolia are also favourite trees for street trees, landscaping and for use as feature trees in the home garden. Pyrus business, enterprise and unlimited editions offer advanced functionality along with ultimate scalability for businesses of any size. They are prized for their colorful, abundant blooms. Research directions based on the current state of pear. Pyrus ussuriensis advanced trees wholesale nursery tga. It is native to korea, japan, and the ussuri river area of far eastern russia. Ohxf 40 a semivigorous pear rootstock, about 23 standard size.
Posts about pyrus ussuriensis written by laidback gardener. A second genome was assembled using wtdbg software as follows. Pyrus ussuriensis manchurian pear tree is a well known mediumsized tree that flowers very early in spring and has bright autumn leaf colour that is held well on the branches. Development of coldhardy quince and amelanchier rootstocks for. Does well on any soil, hardy but takes some time to come into bearing. Pyrus ussuriensis or the manchurian pear is an attractive deciduous tree, much valued for its autumn colour and profusion of lovely white flowers in spring. Pear rootstocks, graft viability, scionrootstock interactions. Manchurian pear pyrus ussuriensis wholesale nurseries in. Their pears are grafted or budded on pyrus ussuriensis rootstocks. Pyrus ussuriensis extra cold hardy rootstock, grows well down to zone 3 usda.
This is an early flowering species which is an attraction where flowers early in spring are desired. Deciduous, pyramid in shape when young becoming very dense and round common names. Root system of an ornamental pear tree home guides sf gate. With a much broader crown than others what we commonly call the manchurian pear is pyrus ussuriensis. Flowers pink fading to white, slightly larger than 1 inch. Rootstocks for fruit trees seedling and seed varieties. The largest tree in north dakota is 29 feet tall with a canopy spread of 24 feet. Conversations in pyrus stay focused, accountable, and ontopic. This name is unresolved the record derives from tropicos data supplied on 20120418 which reports it as an accepted name record 27802408 with original publication details. Ornamental pear pyrus ussuriensis manchurian pear tree. This is basically a pear seedling and hence is the equivalent of growing a pear tree on its own roots. Pyrus communis the pyrus rootstock is used for producing large specimen pear trees. Pyrus ussuriensis it flowers in early spring to coincide with leaf flush, at mustila around midmay, depending on the weather.
A rootstock breeding program with an emphasis on productivity, yield. Anyone have own experience using ussurianharbin as rootstock for. It makes an ideal, shade tree that will highlight any lawn, park or streetscape. The species is hermaphrodite has both male and female organs and is pollinated by insects. Ive written an entire book about shade gardening, so i know its far from impossible. Pyrus ussuriensis rootstocks are also suitable and are used in areas where temperatures are low during winter, as the variety has good frost resistance. Hardiest of all pears growth habit dense, round headed growth. Rootstocks for pear wsu tree fruit washington state university. The mountain frost has a more upright shape and is a more vigorous grower than other ussarian pears. Help pages, faqs, uniprotkb manual, documents, news archive and biocuration projects. Ussurian or harbin pear north dakota state university. The species of major economic importance for fruit production are the western european pear pyrus communis and five asian species or interspecific hybrids p.
Fruit flowering tree flowers flowers and leaves retrieved from. Foliage glossy green in summer changing to reddishpurple in the fall. Reaching around 10m in height the crown broadens with maturity. Rootstocks that impart high vigor are needed for red pears and asian pears. Pyrus ussuriensis in the germplasm resources information network grin, u. Ussurian or harbin pear pyrus ussuriensis general description the hardiest of all pears, introduced from northeastern asia. Pyrus ussuriensis, also known as the ussurian pear, harbin pear, and manchurian pear, is a species of flowering plant in the family rosaceae. Wider spreading than the capital or cleveland select, this form has a dense, rounded habit maturing to be a broad, mediumsized tree. White flowers, semiglossy foliage and dense, variablyrounded forms are of particular interest. Rootstocks bred from pyrus calleryana are commonly used for pears in australia, south america and china because of their good resistance to aphids, fire blight and other diseases. Abstract the most important commercial pear species grown are pyrus. With a broad domed canopy and pyramidlike outline this makes a great shade, street or avenue tree.
Pyrus communis the so called seedlingpear rootstock. Looking for manchurian pear, also known as ornamental pear, for your garden landscape. Glossy dark green leaves which convert to gold, russet, deep crimson during autumn. Reisistant to gill nematodes and shows some resistance to agrobacterium and armillaria fungus. Several species are used for rootstocks including p. Pyrus ussuriensis rootstocks are also suitable and are. Gardeners may complain you cant grow anything under big trees actually, you most certainly can. It is often used as stock for grafting pear cultivars. Pyrus calleryana d6 is the most commonly used rootstock for commercial pear. Ornamental pear trees are commonplace among home landscapes.
This pear fruits very lightly unless it is planted near other pears such as nashi or p. Data source and references for pyrus ussuriensis chinese pear from the usda plants database. Rootstock research project and several individual programs in california, new york, oregon and. Scions cannot be certified free of erwinia amylovora follow links to the germplasm resources information network grin for additional accession information. Its resistance to fireblight, collar rot, woolly pear aphids and pear decline make this a very healthy stock.
This manchurian pear is a very popular selection largely due to the brilliant display of colour in autumn. Learn about our pricing policy and provided options. Pyrus ussuriensis and over other quality seeds for sale. Able to withstand periodic dry conditions ornamental pears are popular for the autumn color and beautiful spring. The manchurian pear is a great addition to any landscape, including parks and medium to large gardens. Pyrus ussuriensis, also known as the ussurian pear, harbin pear, and manchurian pear, is a species of flowering plant in the family rosaceae it is native to korea, japan, and the ussuri river area of far eastern russia. The dark green foliage is oval in shape with serrated edges and the onset of autumn sees this leaves turning to a rich, dark red. Rootstocks descriptions, sizes and other information winter cove. It is dwarf itself and has high dwarfing efficiency on most of main pyrus. In autumn it can turn brilliant shades of orange or red, but with variation between individuals.
Teams adopt pyrus more quickly because it helps track tasks and communicate in one app. Pyrus ussuriensis is a deciduous tree growing to 15 m 49ft 3in at a fast rate. Pyrus ussuriensis tree seeds chinese pear, sand pear. It is compatible with all pear varieties and eventually produces a very large tree well over 6m 20ft, and usually very longlived. Whereas rootstocks for apples and plums come from closely related malus and prunus species respectively, the situation with pear rootstocks is more unusual. Pyrus is a program for the nonlinear dimensioning and analysis of reinforced concrete columns. It is dwarf itself and has high dwarfing efficiency on most of main pyrus cultivated. Bud 9 b9 is a dwarfing stock that produces a tree about 10 to 12 feet tall, needs support, produces at a younger age, is shorter lived and has some resistance to fire blight and collar rot. Pyrus ussuriensis mountain frost plant information online. Pdf propagation of selected pear and quince rootstocks by. It is in flower in april, and the seeds ripen from september to october. Rootstocks for pear trees the choice of rootstocks for pear trees is more limited than it is for apples reflecting the fact that pears are not as commercially important as apples. A fundamental deficiency is the lack of a mature pear rootstock breeding program, despite access to the usda.
For ba29 rootstock cuttings, the best performance was attained by cuttings taken in. Data source and references for pyrus ussuriensis chinese. Pyrus ussuriensis andreasens green wholesale nurseries. It has flowers in spring that are slightly pink when budding and then turn white. Ornamental pear trees pyrus varieties nurseries online. It is dwarf itself and has high dwarfing efficiency on most of main pyrus cultivated species when used as interstock. It allows the analysis of relatively simple columns e. Euro pears on ussurian rootstock general fruit growing growing. Buds are dark brown and have an alternating arrangement. Pyrus communis is significantly more vigorous even than ba29 and heights well in excess of 20 are normal. Rootstocks for pear trees orange pippin fruit trees.