There is plenty of time, so don’t panic! Petunias, ipomoea, nicotiana, dahlia, ageratum, lobelia and sunflowers can be sown up to mid April under glass. Marigolds, zinnias, cosmos and tagetes are the last half-hardy annuals you would sow – these can be sown under glass from April through to early May.

What month is best to plant petunias?

As with almost all bedding plants these days, you can find a wide assortment of petunias at local garden centers. For best results, plant petunias in September through early November or late January through mid-March.

Can I plant my petunias now?

Petunias are tender and won’t tolerate any frost at all, so you mustn’t plant them outside until late spring or early summer. Petunias need a good rich soil to perform well. In borders, prepare the soil by mixing in plenty of well-rotted compost or soil conditioner, in advance of planting.

When should I start growing petunias?

Six to ten weeks before the date of the last expected frost in your area fill 2-inch deep flat boxes or peat pots with moist seed starter mix or soilless potting mix. Then sow the petunia seeds, pressing down lightly on them to be sure they are in contact with the growing medium.

How long does petunia take to grow?

between 10 and 12 weeks

In Conclusion. Generally, petunia seeds germinate within a week, and they complete indoor growing between 10 and 12 weeks. Also, it might take as much as eight weeks for them to bloom. However, you can easily speed up this process by getting a petunia for transplant.

Can petunias survive frost?

Petunias thrive when nighttime temperatures are in the 55 to 65°F range, and daytime temps are between 61 and 80°F. They will succumb to sub-freezing temperatures in a hurry, and anything below 40°F may kill them, though Wave^® petunias can tolerate temperatures as low as 35°F.

Do petunias come back every year?

As a result, most gardeners treat petunias (​Petunia​ x ​hybrida​) like annuals and replace them every year. However, you can ensure your petunias grow back after the winter by bringing them indoors or propagating new plants.

How do you keep petunias over the winter?

Water the plants thoroughly and place them in a cool but above freezing location. Look for a spot in your garage or basement where they’ll be out of the way. Check overwintering petunias every three to four weeks. If the soil has dried out, give them just enough water to moisten the soil.

Do petunias like sun or shade?

full sun

Petunias need at least 5 or 6 hours of good sunlight; they’ll perform even better when located in full sun all day. The more shade they receive, the fewer flowers they’ll produce. Impatiens are a better choice for blooming in shady places.

How do I make my petunias Fuller?

Have you ever asked yourself, “How do I make my petunias fuller?” Preventing leggy petunias requires that you cut back the branches by one quarter or one half on a regular basis. This may be hard to do, as your petunia plant may be in full bloom when you do this. You can cut back all the branches at once.

Do petunias multiply?

Petunia seeds that manage to germinate in the soil will produce tiny plants that can be left where they are or transplanted. Because most varieties have been cross-bred, most plants display characteristics from their parent plants.

How many petunias are in a hanging basket?

Plant spacing

Plant	Flower pouch	Eezee Hanging Basket
Geranium (trailing Pelargoniums)	10	10
Lobelia	10	12
Pansy and Viola	10	12
Petunia (trailing)	8	8

Do petunias spread out?

Often referred to as ‘trailing’ petunias, wave petunias can spread several feet if they are sown in a large, open area such as a garden or outdoor floor bed. Most other petunia types will only spread slightly, if at all, especially when grown in pots, hanging baskets or window boxes.

Are coffee grounds good for petunias?

The answer to this is “YES”. Coffee grounds serve as effective fertilizers for petunias and are also inexpensive. With coffee grounds, petunias which are known to be heavy feeders bloom profusely.

What temperature is too hot for petunias?

Petunias thrive in temperatures of 40 to 90 degrees Fahrenheit, making them hardy and colorful additions to a landscape or hardscape during the warm months of spring through summer. When many plants die as the thermostat starts rising toward 90 F, petunias don’t miss a beat.

Do hummingbirds like petunias?

Flowers that Attract Hummingbirds



These include perennials such as bee balms, columbines, daylilies, and lupines; biennials such as foxgloves and hollyhocks; and many annuals, including cleomes, impatiens, and petunias.

What is the hummingbird’s favorite flower?

Eastern Red Columbine



Why we love it: Sure, you can find cultivated varieties of columbines, but native columbine, with its crimson spurs and bright yellow stamens, is an early-season favorite flower that hummingbirds like. Psst—hummingbirds also love these pink nasturtium flowers.

How often should I water petunias?

once a week

Petunias are fairly heat tolerant, so you shouldn’t have to worry about watering them frequently. A thorough watering once a week should be sufficient (unless there are prolonged periods of drought in your area). Avoid watering shallowly, as this encourages shallow roots.

Do petunias attract bees?

Commonly grown as annuals, petunias grow as tender perennials in U.S. Department of Agriculture plant hardiness zones 9 through 11. While petunias are not as attractive to bees as other flowers, they do attract hummingbirds and butterflies.

Do butterflies and hummingbirds like petunias?

The multiple blossoms on just one petunia plant will attract a variety of wildlife like butterflies and hummingbirds. The blossoms mature and then die away while another blossom grows in its place, making this flower variety a favorite for beautiful blooms all season long.

What bugs do petunias attract?

Petunias are a delicacy for a variety of bugs such as caterpillars, including tobacco budworms and variegated cutworms. Aphids, whiteflies, slugs, and snails also eat them. Animals like rabbits, chickens, squirrels, mice, deer, and mules will feast on petunias as well.

What do petunias attract?

What do petunias attract to the garden? Petunias attract hummingbirds, butterflies and bees, as well as other beneficial insects.

Do petunias self seed?

Petunias will re-seed themselves and come up in or near the same location year after year. Since they are open pollinated seeding, they vary widely in growth habit, flower size, and flower color.

Why are petunias turning white?

Higher than recommended temperatures will cause stretch, weak stems and reduced flower size. Higher temperatures can also affect flower color pattern. A high DIF (hot day, cool night) can cause Night Sky flowers to turn white. High day and night temps can cause the owers to become too purple.

Why is my petunia losing color?

Once pollinated, flowers no longer need to attract their pollinating suitors and, thus, begin to fade. Flowers may also change colors or fade when they are stressed. This can happen if a plant has just been transplanted.

How do you revive a dying petunia?

First thing to do is check to make sure you're giving them adequate water they need water in containers. Just about every day and in the ground.

How do you keep petunias good all summer?

Because if you remember petunias are those high-octane plants that give us a hundred and ten percent in order to look great all summer long we need to feed. Because they're running the marathon.