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Ussurian Pear (Siberian) vs Ottawa 3 Roostock

Pyrus ussuriensis

Robin crab X Malling 9 ((Malus baccata X Malus sylvestris) x Malling 9)

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Ussurian Pear (Siberian)
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Ussurian Pear (aka Manchurian or Siberian Pear) is the most cold hardy of all pear species.

This self-pollinating pear bears white flowers in the spring and has good fall colour, making it an exceptional ornamental addition to any garden. However, it has a tendency to branch quite low and is often used in shelterbelts and hedges too.

It is primarily grown for its attractive flowers and pollination of other pear varieties, or as cold hardy rootstock, and is also an excellent addition to any shelterbelt.

Ottawa 3 Rootstock is the most dwarfing rootstock to come out of the cold-hardy breeding program by the Agricultural Canada Research Station in Ottawa. It produces dwarf to semi-dwarf trees that are 45-55% of standard size. Due to its superior hardiness, it is well adapted to Canadian weather conditions.

It originates from Malling 9 (M.9) and the Robin Crab and is considered more dwarfing than Malling 26 (M.26) and more vigorous than Malling 9. Ottawa 3 Rootstock is very productive and bears fruit early, often requiring structural support when young.

USSURIAN PEAR (SIBERIAN) QUICK FACTS

OTTAWA 3 ROOSTOCK QUICK FACTS

Zone: 3a
Zone: 2a
Height: 10 m (33 ft)
Height: 3 m (10 ft)
Spread: 8 m (26 ft)
Spread: 2.4 m (8 ft)
Moisture: normal
Moisture: normal
Light: full sun
Light: partial shade, full sun
Fall colour: burgundy
Flowers: white
Growth rate: fast
Growth rate: medium
Life span: long
Life span: medium
Maintenance: medium
Maintenance: medium
Suckering: none
Suckering: low





Other Names: o.3 rootstock