The trumpet-shaped flowers come in just about every color imaginable, even the once-impossible yellow, and the flower forms range from single to double, ruffled, striped, and scalloped. They are branching, creeping plants with light-green, hairy leaves that can be sticky. Petunias are one of the easiest annuals to grow, especially if they are purchased as plants. Weeks to Maturity: 8 to 10 weeks Indoor Seed Starting: 8 to 10 weeks before first frost Earliest Outdoor Planting: after last frostĪdditional Plantings: not needed Last Planting: not needed Description Seed to Harvest/Flower: 14 weeks Seeds Storage:
Growing Season Spring: late Summer: yes Fall: early Winter: no ‘Black Velvet’ is a silky textured flowers with almost midnight black coloring.Įxcerpted from my book, New England Getting Started Garden Guide.Family: Nightshade Height: 6 to 24 inches A/B/P, Hardiness: half-hardy annual Spacing: 2 per square The ‘Wave Series’ is a ground cover type with colorful flowers that bounce back well after a rain.
The ‘Ultra Series’ is a grandiflora-type with striped or solid colored flowers. The ‘Picobella Series’ is a milliflora-type with small 1-inch diameter flowers on 8-inch tall plants. The ‘Candy Series’ is a multiflora-type that has mounded, 6-inch tall plants. Petunias can also be paired in pots with taller growing annuals, such as geraniums, other cascading annuals, such as ageratum, and attractive foliage plants, such as coleus and dusty miller. Petunias can be grouped together mixing different colors in a garden bed or container. Petunias like cool weather and in warmer parts of New England, may stop flowering in midsummer. Older varieties will need periodic deadheading though to keep them tidy. Many new petunia varieties are self-cleaning, meaning they don’t need deadheading to look great. Simply pinch back the stems to just above a side branch, fertilize, and they will re-grow and bloom again.
#Planting petunia seeds indoors full
Come mid-summer they may get leggy, especially if not grown in full sun. Petunias are a low maintenance annual that provide lots of color for your effort. Keep petunias well weeded until the sprawling types, such as the ground cover petunias, can fill in an area. Keep plants well watered and fertilize every 3 weeks with an organic plant food. Petunias can grow in part sun, but won’t be as floriferous. Set out transplants after all danger of frost has passed, in well-drained soil, spaced 6 to 12 inches apart in a full sun location. Because of the wide variety of petunias available in garden centers and the time involved is starting petunias from seed, it’s often easier to buy the plants in spring. You can start petunia seeds indoors under grow lights 10 to 12 weeks before your last frost date, or purchase transplants from garden centers. Ground cover types, like the popular ‘Wave Series’, have sprawling vines that can grow 2 to 3 feet wide. Milliflora petunias are the smallest type in growth and flower size. Multiflora petunias have more, but smaller-sized flowers and are compact growing. Grandiflora petunias feature the familiar, large flowers with single or ruffled doubled petals that grow in a mound, but also can cascade. There are many different types of petunias. There are varieties is almost any color of the rainbow, including some very attractive black flowered petunias which I really think are cool. They fill garden centers in spring and end up in garden beds, hanging baskets, containers, and window boxes in many yards. Petunias are one of the most recognizable annual flowers. Summer to fall in colors including from white, black, yellow, pink, red, blue, purple, bi colors and stripedĪttracts beneficials, attracts hummingbirds
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