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For example, a cool oven has temperature set to 200 °F (90 °C), and a slow oven has a temperature range from 300–325 °F (150–160 °C). A moderate oven has a range of 350–375 °F (180–190 °C), and a hot oven has temperature set to 400–450 °F (200–230 °C).
Once the pine cones are collected, they're brought to a network of nurseries, where the seeds are extracted and grown into seedlings. One million seedlings will plant about 4,500 acres of new forest.
The leaves are in fascicles of three, [6] needle-like, yellow-green, twisted, and 9–15 centimeters (3 + 1 ⁄ 2 –6 in) long. The cones are resin-sealed and irregularly shaped, [4] 8–16 cm (3 + 1 ⁄ 4 – 6 + 1 ⁄ 4 in) long and clustered in whorls of three to six on the branches. The scales end in a short stout prickle.
The cones are ovoid, massive, 15–27 cm (6– 10 + 3 ⁄ 4 in) long and 8–14 cm (3 + 1 ⁄ 4 – 5 + 1 ⁄ 2 in) broad and up to 2 kg (4.4 lb) weight when closed, green at first, ripening yellow-brown when 26–28 months old, with very thick, woody scales, typically 30–60 fertile scales.
The cones are globose, 3–5 cm (1 + 1 ⁄ 4 –2 in) long and broad when closed, green at first, ripening yellow-buff when 18–20 months old, with only a small number of thick scales, with typically 5–10 fertile scales. The cones open to 4–6 cm (1 + 1 ⁄ 2 – 2 + 1 ⁄ 4 in) broad when mature, holding the seeds on the scales
The Parry pinyon begins to grow cones at around 10 to 20 years, and seed production is maximized at 50 or more years of age. The cones are globose, 4–5.5 cm ( 1 + 5 ⁄ 8 – 2 + 1 ⁄ 8 in) long and broad when closed, green at first, ripening yellow to orange-buff when 18–20 months old, with only a small number of thick scales, with ...
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The female cones take 1.5–3 years (depending on species) to mature after pollination, with actual fertilization delayed one year. At maturity the female cones are 3–60 cm long. Each cone has numerous spirally arranged scales, with two seeds on each fertile scale; the scales at the base and tip of the cone are small and sterile, without seeds.