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The male cones are 3–5 mm long and release highly allergenic pollen in late winter. The cones of C. sempervirens can withstand years of being sealed and are known to perform serotiny. [8] The tree is moderately susceptible to cypress canker, caused by the fungus Seiridium cardinale, and can suffer extensive dieback where
Taxodium distichum (baldcypress, [3] [4] [5] bald-cypress, [6] bald cypress, swamp cypress; French: cyprès chauve; cipre in Louisiana) is a deciduous conifer in the family Cupressaceae. It is native to the southeastern United States. Hardy and tough, this tree adapts to a wide range of soil types, whether wet, salty, dry, or swampy.
Inside the cone are approximately 70 to 100 seeds, brown with a light waxy coating described by botanists as glaucous. [3] [10] The seeds are much larger than those of other western cypress trees, weighing two to seven times as much. [4] Closed, but already ripe, cones still on the trees will also open after being exposed to the heat of a fire ...
In general, lemon cypress trees won’t need to be fertilized at all, but if your plant looks like it needs a pick-me-up, fertilize it just once a year in early spring with compost or a diluted ...
The seed cones are globose to oblong, 10–20 mm long, with four to 10 scales, green at first, maturing brown or grey-brown about 25 months after pollination. The cones may either open at maturity to release the seeds, or remain closed for several years, only opening after the parent tree is killed in a wildfire , allowing the seeds to colonise ...
Hesperocyparis forbesii reaches 10 metres (33 ft), and is usually without dominant terminal shoot resulting in a multi-trunked tree. The foliage ranges from rich light green to green, and seed cones are dark brown, measuring 20–32 mm. [3] Hesperocyparis forbesii - Tecate cypress bark, at Guatay Mountain, Cuyamaca Mountains
The seed cones are oblong-ovoid to cuboid, 15–25 mm long and 13–20 mm broad, with six (rarely four or eight) scales, each scale bearing a prominent umbo; they are strongly serotinous, not opening to release the seeds until the parent tree is killed by wildfire. This enables heavy seed release to colonize the bare, fire-cleared ground.
The seed cones are globose to oblong, 11–22 mm (0.43–0.87 in) long, with 6 to 10 scales, green at first, maturing brown or gray-brown about 20–24 months after pollination. The cones remain closed for many years, only opening after the parent tree is killed in a wildfire , thereby allowing the seeds to colonize the bare ground exposed by ...