Plant Your Seeds

Latin Name	Common Name	Stratification (Days/Temp)	Date (non-stratified seed)	Date (stratified seed)	Depth (cm)
Abies balsamea	Balsam fir	60 / 5°C	Early Sept	Mid May	0.5
Acer tatarica	Tatarian maple	45 / 5°C	Mid Oct	Mid May	2
Acer negundo	Manitoba maple	45 / 5°C	Mid Oct	Mid May	2
Acer tegmentosum	Snakebark Maple	120 / 5°C	Mid Oct	Mid May	2
Aesculus glabra	Ohio buckeye	60 / 5°C	Late Sept	Mid May	5
Amelanchier alnifolia	Saskatoon berry	120 / 5°C	Early Aug	Mid May	1
Betual papyrifiera	Paper birch	No treatment needed	Mid Sept or June	Mid Sept or June	0.5
Caragana arborescens	Caragana	Water Soak 24 hrs	Mid-Aug or June	Mid-Aug or June	1.5
Cornus stolonifera	Red-osier dogwood	70 / 5 °C	Mid Sept	Mid May	2
Cotoneaster acutifolia	Cotoneaster	90 / 20°C & 120 / 5 °C	Late Aug	Mid May	2
Crataegus arnoldiana	Arnold hawthorn	90 / 20°C & 180 / 5 °C	Mid July	Mid May	2.5
Elaeagnus angustifolia	Russian olive	90 / 5 °C	Mid Oct	Mid May	2.5
Elaeagnus commutata	Wolfwillow	90 / 5 °C	Mid Oct	Mid May	2.5
Fraxinus pennsylvanica	Green ash	60 / 5 °C	Mid Oct	Mid May	1.5
Halimodendron halodendron	Siberian salt tree	15 / 5°C	Mid Oct	Mid May	1
Hippophae rhamnoides	Seabuckthorn	Water Soak for 48 hrs	Mid Oct or Mid May	Mid Oct or Mid May	1
Larix sibirica	Siberian larch	45 / 5 °C	Mid Oct or Mid May	Mid Oct or Mid May	1
Malus baccata	Siberian crab	30 / 5 °C	Mid Oct	Mid May
Picea abies	Norway spruce	No treatment needed	Mid Oct or Mid May	Mid Oct or Mid May	1
Picea glauca	White spruce	No treatment needed	Mid Oct or Mid May	Mid Oct or Mid May	1
Picea pungens	Colorado spruce	30 /5°C	Mid Oct	Mid May	1
Pinus contorta	Lodgepole pine	60 / 5 °C	Mid Oct	Mid May	1
Pinus mugo	Mugo pine	60 / 5 °C	Mid Oct	Mid May	1.5
Pinus ponderosa	Ponderosa pine	30 / 5 °C	Mid Oct	Mid May	1.5
Pinus sibirica	Siberian pine	60 / 20°C & 120 / 5 °C	Mid Aug	Mid May	1.5
Pinus sylvestris	Scots pine	No treatment needed	Mid Oct or Mid May	Mid Oct or Mid May	1.5
Prunus besseyi	Sand cherry	140 / 20°C & 90 / 5 °C	Late July	Mid May	2
Prunus cerasus	Sour cherry	90 / 5 °C	Late July	Mid May	2
Prunus fruticosa	Mongolian cherry	120 / 5 °C	Late July	Mid May	2
Prunus nigra	Canada plum	120 / 5 °C	Early Aug	Mid May	3
Prunus pensylvanica	Pin cherry	120 / 5 °C	Late July	Mid May	2
Prunus tomentosa	Nanking cherry	150 / 5 °C	Late July	Mid May	2
Prunus virginiana	Choke cherry	30 / 20°C & 120 / 5 °C	Late July	Mid May	2
Pseudotsuga menziesii	Douglas fir	60 / 5 °C	Mid Oct	Mid May	2
Pyrus ussuriensis	Ussurian pear	60 / 5 °C	Late Sept	Mid May	2
Quercus macrocarpa	Bur oak	120 / 5 °C	Late Sept	Mid May	3
Rosa woodsii	Wood’s rose	90 / 20°C & 120 / 5 °C	Late July	Mid May	1.5
Rosa rugosa x woodsii	Hedge rose	90 / 20° & 120 / 5 °	Late July	Mid May	1.5
Sambucus racemosa	Red elder	90 / 25°C & 120 / 5 °C	Late July	Mid May	1.5
Shepherdia argentea	Silver buffaloberry	90 / 5 °C	Mid Oct	Mid May	2
Sorbus aucuparia	European mountain ash	180 / 5 °C	Late Sept	Mid May	0.5
Symphoricarpus occidentalis	Snowberry	120 / 25°C & 180 / 5 °C	Late July	Mid May	1.5
Syringa reticulata	Amur tree lilac	90 / 5 °C	Late Sept	Mid May	2
Syringa villosa	Villosa lilac	60 / 5 °C	Late Sept	Mid May	2
Tilia americana	American linden	150 / 5 °C	Late Sept	Mid May	2
Tilia cordata	Littleleaf linden	90 / 25°C & 90 / 5°C	Mid Aug	Mid May	1.5
Ulmus americana	American elm	No treatment needed	Mid June	Mid June	1.5
Viburnum lentago	Nannyberry	150 / 25°C& 150 / 5°C	Mid June	Mid May	2
Viburnum trilobum	Highbush cranberry	140 / 25 °C	Mid June	Mid May	2