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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 ...
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Petunias are generally insect pollinated, with the exception of P. exserta, which is a rare, red-flowered, hummingbird-pollinated species. Most petunias are diploid with 14 chromosomes and are interfertile with other petunia species, [ 9 ] [ 10 ] as well as with Calibrachoa .
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. There is a dwarf variety that is ...
Its leaves are oppositely arranged, around 2.5 inches long by 1 inch wide, and are light green to medium green with entire margins. The stems and leaves are covered with soft white hairs. The funnel-shaped 5-lobed flowers are about 1.5 to 2.5 inches in diameter and resemble petunias, as does the rest of the plant.
Understanding the various types of weeds in lawns is crucial, as these unwanted plants grow profusely and pose significant aesthetic problems. Moreover, they deprive your more desirable plants of ...
Plant cauliflower where it will be able to grow in rich, well-drained garden soil and receive at least six to eight hours of sun daily. Cauliflower grows best in soil enriched with compost. How ...
After pollination, a seed capsule forms at the leaf axil where the flower originated. [6] The seeds of Ruellia caroliniensis are dispersed through explosive dehiscence.When the seed capsules of the plant reach maturity (after about two months), they burst open propelling the seeds away from the parent plant.