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Cage feeding of deer mice (Peromyscus maniculatus) and red-backed vole (Myodes gapperi) showed a daily maximum seed consumption of 2000 white spruce seeds and of 1000 seeds of lodgepole pine, with the two species of mice consuming equal amounts of seed, but showing a preference for the pine over the spruce (Wagg 1963). [33]
Norway spruce is a large, fast-growing evergreen coniferous tree growing 35–55 m (115–180 ft) tall and with a trunk diameter of 1 to 1.5 m. It can grow fast when young, up to 1 m per year for the first 25 years under good conditions, but becomes slower once over 20 m (65 ft) tall. [6] The shoots are orange-brown and glabrous.
White spruce seed collection is expensive, and collection from cone caches of red squirrels is probably the cheapest method. The viability of seed from cached cones does not vary during current caching, but viability drops essentially to zero after being in caches for 1 or 2 years. [ 8 ]
Seeds are small, 2.5 to 5 mm long, oblong, and acute at the base. Determinations of the average number of sound seeds per white spruce cone have ranged from 32 to 130. [10] [11] Common causes of empty seed are lack of pollination, abortion of the ovule, and insect damage. The average weight per individual seed varies from 1.1 mg to 3.2 mg. [12]
Winter is the season with the poorest rainfall, the precipitation is usually less than 20 percent of the annual moisture falling from December to March. Fifty percent [dubious – discuss] of the annual precipitation occurs during the growing season of the plants. [30] [32] Blue spruce is generally considered to grow best with abundant moisture.
Indoor sowing generally works best with slow-growing seeds that need plenty of time to mature before the harvest season, but it’s also a great option for heat-loving plants that won’t survive ...
Foliage and cones. Red spruce is a perennial, [8] shade-tolerant, late successional [9] coniferous tree that under optimal conditions grows to 18–40 m (59–131 ft) tall with a trunk diameter of about 60 cm (24 in), though exceptional specimens can reach 46 m (151 ft) tall and 100 cm (39 inches) in diameter.
Picea sitchensis, the Sitka spruce, is a large, coniferous, evergreen tree growing to just over 100 meters (330 ft) tall, [2] with a trunk diameter at breast height that can exceed 5 m (16 ft).
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