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Petunia seeds germinate in 5 to 15 days. Petunias can tolerate relatively harsh conditions and hot climates. They need at least five hours of sunlight every day. They grow well in low humidity, moist soil. Young plants can be grown from seeds. Petunias should be watered once every two to five days. In drier regions, the plants should be watered ...
Ruellia strepens, commonly known as limestone wild petunia, [2] limestone ruellia, [3] smooth wild petunia, [4] or wild petunia [5] is a species of flowering plant in the family Acanthaceae, native to warmer parts of the central and eastern United States.
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 × ...
Seeds of many trees, shrubs and perennials require these conditions before germination will ensue. [3] In the wild, seed dormancy is usually overcome by the seed spending time in the ground through a winter period and having its hard seed coat softened by frost and weathering action. By doing so the seed is undergoing a natural form of "cold ...
It is a measure of germination time course and is usually expressed as a percentage, e.g., an 85% germination rate indicates that about 85 out of 100 seeds will probably germinate under proper conditions over the germination period given. Seed germination rate is determined by the seed genetic composition, morphological features and ...
Ruellia caroliniensis, the Carolina wild petunia, is a wild petunia of the family Acanthaceae native to the southeastern United States. [1] It's native range spans the eastern coast with the northernmost extent reaching New Jersey [ 2 ]
Ruellia simplex is an evergreen perennial growing 3 ft (0.91 m) tall, forming colonies of stalks with lance-shaped leaves that are 6 to 12 in (15 to 30 cm) long and .5 to .75 in (1.3 to 1.9 cm) wide. The flowers are metallic blue to purple, trumpet-shaped with an about 2 in (5.1 cm)-wide, five-lobed corolla .
In addition to growth by cell division, a plant may grow through cell elongation. This occurs when individual cells or groups of cells grow longer. Not all plant cells grow to the same length. When cells on one side of a stem grow longer and faster than cells on the other side, the stem bends to the side of the slower growing cells as a result.
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