7/24/2023 0 Comments Doug fir seeds![]() Plant the seedlings into a sunny, sandy bed at least 75 days before the first frost in autumn, or shelter the seedlings in a cold frame until the following spring if it is too late in the year for planting. Maintain the same light and moisture conditions provided to the seeds during germination until they grow to 10 cm (4") in height.ħ. Watch for sprouting one month after sowing. Protect the seeds from direct sunlight during the hottest part of the day since the soil will warm too quickly and dry out.Ħ. Place the pots outdoors in a sheltered spot where they will be exposed to direct sun in the morning and afternoon. Maintain moisture during the germination process.ĥ. Water the seeds to a depth of 8 cm (3") after planting them. Sow one seed in each pot at a depth of 2-2.5 cm (1").Ĥ. The seeds will germinate naturally on the ground after falling from the tree. Seed germination (needs dormancy breaking) Light exposure and stratification will affect seed germination. Fill 20 cm (8") plastic pots with garden soil taken from the bed where the trees will eventually be planted. Seeds Collection restrictions or guidelines Seeds dispersal begins around mid August and two-thirds of the seed crop will be dropped by October. Keep the sand barely moist during the cold stratification period.ģ. Stratify seeds in a plastic bag full of moist sand inside the refrigerator for 30-60 days. 30-60 days cold moist stratification recommended for a higher germination rate. Soak the seeds in a bowl of cool water for 24 hours.Ģ. Landscape uses - Used as Christmas tree, valuable timber tree, landscape treeġ. A good tree for northern and northwestern climates. Does best in locations with abundant air and soil moisture. Genus name comes from the Greek words pseudo meaning false and Tsuga meaning hemlock.īest grown in medium to wet, well-drained soils in full sun. This is an important timber tree in the Pacific Northwest. The bulletin summaries seed origin research in Douglas fir over a period of 50 years. Trees become more cylindrical with age as they lose their lower branching, with older trees typically having branching only on the top 1/3 of the tree. suitability, provenance, Pseudotsuga menziesii, seed origin choice. Narrow pyramidal shape with branching to the ground when young. ![]() Fallen or plucked needles leave raised circular leaf scars on the twigs. Pseudotsuga menziesii, commonly known as Douglas fir or Douglas-fir, is an evergreen conifer species native to western North America Pseudotsuga menziesii. The species is indigenous to coastal area.įlat, linear, spirally-arranged, dark green needles (to 4 cm / 1.5" long) with white banding beneath. Unique forked cone bracts distinguish this tree from all other conifers. ![]() Pseudotsuga menziesii, commonly called Douglas fir, is a medium to very large conifer.
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