P. axillaris bears night-fragrant, buff-white blossoms with long, thin tubes and somewhat flattened openings. The species was first sent from South America to Paris in 1823. P. integrifolia has a somewhat weedy habit, spreading stems with upright tips, and small lavender to purple flowers. It was discovered in South America by the explorer James Tweedie, who sent specimens to the Glasgow Botanical Garden in 1831.
http://en.wikipedia.org/wiki/Petunia
Older varieties of petunias require diligent deadheading or they will stop blooming. Even the newer varieties that say they don’t require deadheading will benefit from a pinching or shearing mid-season. When the branches start to get long and you can see where all the previous flowers were along the stem, it’s time to cut them back and refresh the plant.
Monthly feeding or foliage feeding will give your petunias the energy to stay in bloom. But be judicious with water and make sure the soil is well drained. Too much water will cause the plants to become ‘leggy’, with lots of stem and few flowers. http://gardening.about.com/
Older varieties of petunias require diligent deadheading or they will stop blooming. Even the newer varieties that say they don’t require deadheading will benefit from a pinching or shearing mid-season. When the branches start to get long and you can see where all the previous flowers were along the stem, it’s time to cut them back and refresh the plant.
Monthly feeding or foliage feeding will give your petunias the energy to stay in bloom. But be judicious with water and make sure the soil is well drained. Too much water will cause the plants to become ‘leggy’, with lots of stem and few flowers. http://gardening.about.com/