Plantings on dry, exposed, calcareous soils will often fail. Plantings do best on well drained soils, with moderately good moisture holding capacity, and soils that are slightly acidic. Naturally, it grows on bluffs, ridges and wooded slopes on soils with good internal drainage. Even though it is not native in most of Iowa, it is a common tree in Iowa's landscape because it has been planted extensively for ornamental purposes, Christmas trees, wildlife habitat, windbreaks and timber production.
WHITE PINE PLUS
White pine is native to northeast Iowa, plus isolated native stands in Hardin, and Muscatine counties. Most pines will overwinter with 2-3 years of needles, white pine looses all but the current years needles in the early fall.
Its curve upper branches have a pronounced upward shape, and the length of its limbs often varies considerably from one whorl to the next. The fine-textured leaves and the asymmetric shape of older trees make white pine one of the easiest conifers to identify from a distance. The bark on young trees is smooth and light gray, becoming dark gray to black with flat plates separated by shallow fissures on older trees. The terminal buds are ovoid in shape, about 3/8 of an inch long, tapering to an abrupt slender tip, and have light brown scales. The cones are 3-6 inches long, gradually tapering, with cone scales without prickles and light tan to whitish in color on outer edge of the scales. Its leaves or needles occur in bundles or fascicles of five, 3-5 inches long, bluish green, with fine white lines or stomata. White Pine Fruit - Photo by Paul Wray, Iowa State University Seed Stratification: Prechill for 2 months at 34☏ to 40☏. Seed Bearing Frequency: Every 3 to 10 years Leaves: Alternate, simple, double-toothed with unequal leaf bases Site Requirements: White pines grow best in well-drained upland soils, but are adaptable. White Pine Tree - Photo by Paul Wray, Iowa State University Can be found in the eastern half of Iowa but mainly in the extreme northeast. Habitat: Found growing on sandy or rocky steep wooded slopes. Evergreen or conifer trees differ from hardwoods or deciduous trees in that the leaves are needle like and the reproductive organs are borne in cones instead of flowers. They are eastern white pine ( Pinus strobus), redcedar, balsam fir, common juniper and yew.
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