Like grandiflora varieties, they're available in single or double forms, though the vast majority are singles. Typically, they're massed together to create big splashes of color in the garden. Milliflora petunias are compact, miniature plants that produce abundant quantities of perfect, small flowers only an inch to an inch and a half in diameter. They make good edging plants and are also attractive when mixed with other flowering annuals in containers, where they may be viewed close-up.
Groundcover or "spreading" petunias are only about six inches tall, but spread so rapidly that they cover a huge area over one growing season, provided they're watered and fertilized frequently.
This makes them ideal for scrambling down a hillside garden, or planting atop a retaining wall. They're also amazing in hanging baskets and window boxes, where they trail two to three feet or more over the summer. When grown in full sunlight, they are so covered by flowers that you hardly see any foliage. All rights reserved. The University of Minnesota is an equal opportunity educator and employer.
Home Yard and garden Find plants Flowers Growing petunias. Quick facts Petunias are among the most popular flowering annuals for good reason. Best of all, petunias are amazingly easy to grow, both in the garden and in containers.
Site and soil. How to care for petunias When planting in the garden, work a balanced fertilizer such as , , or into soil at a rate of 2 pounds per square feet. Later — early to mid-July — begin to use liquid fertilizer every 3 weeks "Spreading" types require weekly fertilizing. Starting seeds indoors Although petunias are easy to grow outdoors from transplants, they may prove more challenging for beginning gardeners to start from seed.
Spread seeds sparingly on top of a container of clean, damp potting soil or milled sphagnum moss. Water with a fine mist to wash them into the potting material or press them in gently with your fingers before watering. Fertilizer is a key component of its success. Balanced fertilizers are one of the best options for your Petunias. Being balanced means that the three macro-nutrients have equivalent volumes; equal parts Nitrogen, Phosphorous, and Potassium, in that order.
Fertilizers with an , , or will greatly help your Petunias. There are also other fertilizers with different levels of the macro-nutrients that will benefit your Petunias. The best time to treat your Petunias with fertilizer is beginning to mid-July, and every few weeks. We have compiled a list of some of the best Petunia fertilizers on the market. Check out the links below!
This fertilizer has been blended to precisely fit the needs of Petunias. It contains enhanced micronutrients that will produce lush, vibrant plants that endure any growing conditions. Each bucket contains 1. You can order packs of 1, 2, 3, or 4 buckets. The low levels of phosphorous in this product help keep your Petunias looking fuller. This formula works excellently in hanging baskets or containers as well.
Mix one tablespoon of fertilizer with one gallon of water and feed it every 7 to 10 days. Customers who have bought and used this Petunia feed have reported that their Petunias have never looked better.
Some said that within a week they could notice a drastic difference in the abundance of blooms that their Petunias produced. Click here to see more on Amazon. This fertilizer works for both indoor and outdoor plant varieties. People that have used this product say that it is hands down the best fertilizer on the market.
Other customers have used this fertilizer for years and are very pleased with the results. Water-soluble fertilizers should be used in the regular irrigation water at the manufacturer's recommended rate. Water well after feeding to prevent root burn. Sasha Degnan is a freelance writer and educator specializing in gardening and horticulture. She has nearly 25 years of experience in the propagation and care of plants. By Sasha Degnan Updated August 31, Related Articles. Does Phosphate in Fertilizer Increase Blooms?
Fertilizing Midnight Wine Weigela. Petunias Petunia x hybrida are popular for their easy care, bright, showy flowers and the fact that they bloom all summer. They can be spaced closely for masses of color or planted in pots or window boxes; the spreading varieties can be grown in hanging baskets or allowed to drape over walls.
They are not too particular about water or soil requirements, although full sun and well-drained, moderately fertile soil is best. Spread organic matter on the soil to a depth of 2 inches before planting.
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