Maine Garden Ideas
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How to Grow and Care for Petunias

Picture
I didn't always like petunias. I thought they were for old ladies. Perhaps I was right. I find the older I get, the more these cascading flowers appeal to me. I like to think it is because today's wave petunias create a cascading mass of color - but I can't be sure. I usually  plant them in my half whiskey barrel, but one planter is never enough. I add hanging baskets and buckets overflowing with petunias on my back porch, too. I tell people they are to attract my hummingbirds, but truth be known, I simply love the scent of petunias wafting in the night air.



Lighting 
Experts will tell you that petunias love full sun and that you should plant them in an area that receives direct sunlight for at least 6 to 8 hours a day. I'm sure that advice works in some areas, but here in my Maine garden they do better in bright morning light and afternoon shade. Colors are brighter and blooms are larger and more prolific.

Last summer, I actually tested my theory - the fact that it was an accident really doesn't matter. I bought two flats of identical wave petunias. I planted one in a planter that received only morning sun for a few hours each morning. The second flat was planted in my whiskey barrel in direct sunlight from morning until sunset. Within weeks the petunias in morning sun flourished producing rich, green foliage and abundant deep-rose blooms. Those in full sun survived but could not compete with either size or color.

Watering 
Petunias, especially those grown in containers, require consistent watering - often once or twice a day, depending on the size of the plant, rate of growth and weather conditions. I make a habit of watering mine every morning and checking them again in the evening for any signs of wilting or drying. Water until water runs freely through the bottom of the pot to ensure that all soil is moistened.

Fertilizer 
Feed petunias water-soluble fertilizer designed for flowering plants every 10 to 14 days. I'll be honest with you, I use Miracle-Gro for vegetables on mine and they respond with lush, vigorous vines with vibrant blooms. Petunias are heavy feeders and need the added nutrients to produce healthy foliage and blooms.

Deadheading 
Some petunias are marketed as self-cleaning, but most require daily deadheading to keep them looking good and producing new flowers. I deadhead mine in the morning before watering, but you can do it any time of day. Simply snap the faded bloom from the plant. This tricks the plant into thinking it has not produced enough blossoms to set seed. It responds by producing more blooms.

Special Problems 
Hot, dry weather may cause your petunia plants to "dry up" prematurely. Lack of water for a day or two can result in dry, crumbly leaves and shriveled flowers. If this happens to you, you can typically  revive your petunias and force a new flush of blooms. 


Copyright © 2014 Nannette Richford



  • Home
  • Garden Thyme Blog
  • Themes
    • Butterfly Gardens
    • Moon Gardens
    • Sensory Gardens
    • All About Fairies
  • Flowers
    • Annual Flowers >
      • Alyssum
      • Cosmos
      • Geraniums
      • Marigolds
      • Morning Glories
      • Nasturtiums
      • Petunias >
        • Reviving Petunias
      • Snapdragons
      • Sunflowers
      • Sweet Peas
      • Zinnias
    • Perennial Flowers >
      • Golden Glow (Rudbeckia laciniata ‘Hortensia’)
      • Lupines
      • Purple Coneflower (Echinacea Purpurea)
    • Maine Wildflowers
  • Veggies
    • Warm Season Vegetables >
      • About Beans >
        • Growing Beans
        • Growing Pole Beans
        • How to Make a Teepee Trellis
      • About Corn >
        • Growing Corn
        • What is Baby Corn, anyway?
        • Can you grow corn in containers?
      • Cucumbers >
        • Grow a cucumber in a bottle
        • Growing Pickling Cucumbers
        • Growing cucamelons (Mexican Gherkin)
        • Why do cucumbers blossom but fail to set fruit?
        • Trellising Cucumbers
        • Making Cucumber Relish
        • Powdery Mildew on Cucumbers
      • Melons
      • Peppers >
        • Growing Peppers
      • Squash >
        • Growing Zucchini
        • Spaghetti Squash
      • Tomatoes >
        • How to Harden Off Tomato Plants
        • How (and when) to Prune Tomatoes
        • Magnesium Sulfate (Epsom Salt) for Tomatoes
        • Blossom End Rot in Tomatoes
        • Growing Cherry Tomatoes in Hanging Baskets
        • 4 Best Tomatoes for Short Seasons - Early Tomatoes
        • 5 Early Maturing Tomatoes for Short Season Gardening
        • How to Ripen Green Tomatoes
        • How to Make Sun-Dried Tomatoes at Home
        • How to Grow a Pomato Plant
    • Cool Season Vegetables >
      • Cole Crops
      • Greens >
        • How to Grow Spinach
        • How to Grow Malabar Spinach
        • How to Grow Swiss Chard
        • Harvesting and Cooking Beet Greens
        • How to Grow Microgreens
      • Onions & Garlic >
        • How to Grow Garlic
        • How to Grow Onions
      • Peas >
        • Growing Garden (shelling) Peas
        • Growing Sugar Snap Peas
      • Potatoes >
        • How to Grow Potatoes in Containers
        • How to Grow Potatoes in Hay Bales
      • Root Crops >
        • Growing Beets
        • How to Grow Carrots
        • Turnips vs Rutabagas
  • Herbs
    • Growing Basil
    • Growing Chives
    • Growing Lavender
    • Herbal Tea Garden
    • How to Grow a Culinary Herb Garden
    • How to Grow Herbs in Sponges
    • Colonial Herb Garden - Classroom Project
    • Herbed Butter
    • Making Herbed Oils
  • Gardening Basics
    • Seed Starting Basics
    • Grafting Basics
    • Soil >
      • Starting a New Garden
      • How to Prepare Soil
      • How to Test Soil Drainage
      • What Type of Soil Do You Have
      • Soil Mix Recipe for Containers
      • How to Make Compost Tea
      • How to Use Mulch
  • Garden Pests
    • How to Control Japanese Beetles
    • How to Control Blister Beetles
    • How to Get Rid of Colorado Potato Beetles
  • Birds
    • Hummingbirds >
      • DIY Hummingbird Feeders from Recycled Bottles
      • Annuals for Hummingbird Gardens
      • Perennials for Hummingbird Gardens
    • About Birdseed
    • Choosing a Birdfeeder
  • Fiddleheads and Fairies
  • About Us
  • Contact Us
  • How to Marinate Roasted Vegetables