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Hopkins' bioclimatic law states that in North America east of the Rockies, a 130-m (400-foot) increase in elevation, a 4° change in latitude North (444.48 km), or a 10° change in longitude East (two-thirds of a time zone) will cause a biological event to occur four days later in the spring or four days earlier in the fall. [1]
Early- to mid-spring blooming hyacinths (Hyacinthus spp.) are available in shades of blue, pink, red, purple, and white. Sweet-scented and hardy in the same climate as snowdrops, they make a ...
Vernalization (from Latin vernus 'of the spring') is the induction of a plant's flowering process by exposure to the prolonged cold of winter, or by an artificial equivalent. After vernalization, plants have acquired the ability to flower, but they may require additional seasonal cues or weeks of growth before they will actually do so.
Verbena bipinnatifida is an herbaceous or semi-woody perennial. [4] It produces pink or purple flowers primarily in the spring, but can bloom anytime throughout the growing season. [ 5 ] Its leaves are finely dissected, into segments that are 1–4 mm wide.
Another bloom that signals the end of winter and the start of a new gardening season is the Crocus. A squat groundcover in the Iris family growing 4 to 6 inches tall and wide, they are yellow ...
Verbena stricta is an extremely important component of many butterfly gardens, as the leaves are the ideal food for the larval form of the common buckeye butterfly. [4] The seeds are also an important dietary portion of many small birds and mammals.
The warmer weather in Ohio might have you itching to start some yardwork. But is it the best time of year to spread grass seed or fertilize the lawn? It's spring!
Verbena bonariensis is a tall and slender-stemmed perennial. It can grow to 6 ft (180 cm) tall and can spread to 3 ft (90 cm) wide. At maturity, it will develop a woody base.