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Petunia is a genus of 20 species of flowering plants of South American origin. [1] The popular flower of the same name derived its epithet from the French, which took the word pétun, 'tobacco', from a Tupi–Guarani language. A tender perennial, most of the varieties seen in gardens are hybrids (Petunia × atkinsiana, also known as Petunia × ...
'Purple Wave' was the first introduced cultivar of spreading petunia and grows to a height of 4 inches (100 mm). 'Tidal Wave' is another spreading type of petunia but is much taller (between 16–22 inches (410–560 mm)). 'Surfinia' petunias are another type of spreading petunia propagated by cuttings.
There are multiple manufacturers of plastic trays, packs and pots that can be filled with standardized packaged potting soil with flat filling machines. Seedlings (plugs) [20] [21] [22] and cuttings (young plants) are shipped to the production greenhouse from specialized propagation greenhouse businesses. The young plants are hand transplanted ...
The propagation constant of a sinusoidal electromagnetic wave is a measure of the change undergone by the amplitude and phase of the wave as it propagates in a given direction. The quantity being measured can be the voltage , the current in a circuit , or a field vector such as electric field strength or flux density .
Calibrachoa parviflora is a species of flowering plant in the nightshade family known by the common name seaside petunia.It is native to much of southeastern South America, Mexico, and the southwestern United States, and it is present as an introduced species in other sections of the Americas, such as the southeastern United States, as well as in Australia, where it is an occasional weed in ...
Solitary wave in a laboratory wave channel. In mathematics and physics, a soliton is a nonlinear, self-reinforcing, localized wave packet that is strongly stable, in that it preserves its shape while propagating freely, at constant velocity, and recovers it even after collisions with other such localized wave packets.