Pansies have a tolerance to low-temperatures and actually thrive in cool weather (40°-60°F) (Kwon 1992). They are capable of surviving temperatures down to the single digits, but when the air temperature drops below 25°F, pansy foliage will wilt and turn a gray-green color.

What temperature is too cold for pansies?

It is a good idea to monitor the weather, as temperatures that drop into the low 20s can damage even the most cold-tolerant annuals, such as pansies. Temperatures that dip to 25 degrees will likely damage the flowers on pansies. The plants should survive, but their spring flower display will be severely affected.

Is it too early to put pansies outside?

Pansies can be planted in the early spring or the fall. Pansies can be finicky to start from seed; it’s a lot easier to buy established plants from a local nursery. Plus, you’ll get blooms a lot sooner.

Should I cover my pansies tonight?

Many plants — such as azaleas, pansies and hollies — can survive just fine without any covering. Some may wilt overnight, but they’ll perk up again the next day.

Can pansies survive 30 degree weather?

Pansies and Violas are hardy plants and will survive a frost—and even a hard freeze—for a period of time. Depending on how hard the frost was, flowers that were blooming may wither, but the plants will stay alive. … When temps fall below 10 degrees for several hours, this is extreme cold for Pansies and Violas.

Do pansies like sun or shade?

Light: Pansies do best with about six hours of sun daily. In warmest regions (Zone 7 and warmer), protect plants from full sun during the hottest part of the day. Too much heat can slow flower formation. New trailing pansy varieties, like Cool Wave, need a minimum of six hours of full sun to flower best.

Can pansies live indoors?

You see pansies (Viola x wittrockiana) in garden centers everywhere because they are easy to grow, come in a wide range of colors and can grow both indoors and out. … Hardy in U.S. Department of Agriculture plant hardiness zones 3 through 9, pansies are a colorful addition to your home when grown as a houseplant.

At what temperature do I need to cover my plants?

When the temperature reaches around 28 degrees F for five consecutive hours, protect your plants by covering them with sheets, blankets, towels, cardboard, or a tarp. Cover the plants before dark to trap them in warm air and don’t allow the coverings to touch the foliage.

Can pansies survive summer heat?

Pansies are a classic cool weather flower, used in most places as an annual. … They will bloom well until the heat of summer, at which time the plants will wilt and sag and stop producing flowers. But keep them going and you will get blooms again in the fall as temperatures cool off again.

Can I plant pansies in April?

Pansies can be planted in the early spring or the fall. … But if you want to seed, start pansy seeds indoors in late winter 8 to 10 weeks before the last spring frost for early spring and summer flowering. Or, start seeds in late summer for fall and winter flowering.

Article first time published on

When can pansies be put outside in spring?

Pansies grow best when soil temperatures range between 45 and 65 degrees Fahrenheit. Spring planting roughly coincides with planting your earliest spring vegetables. Long, cool springs in northern gardens equate to long-lasting pansy displays.

How long will pansies last?

That means if you plant them in the autumn, pansies can last up to eight months, from September to April or May, providing colorful blooms for much of that time. They usually aren’t very pretty in the dead of winter, but their spring blooms can be even more robust when the plants have been in the ground since fall.

Do pansies come back every year?

The short, quick answer is, yes. Because they have little freeze tolerance, most will die in sustained winters. In areas with moderate temperatures, they may come again in spring, especially if they were mulched to protect the roots.

Will pansies survive winter in pots?

Pansies grown in pots can be left outdoors through the winter – just give them a deep watering before a hard freeze, and consider covering them during any extremely frigid weather.

How often should you water pansies?

Pansies need 1 inch of water weekly when they are actively growing. However, gardeners need to ease up on watering when rain provides adequate irrigation. In addition, manual watering should occur in the morning so foliage has the morning sun and the rest of the day to dry.

How do you take care of pansies in the house?

Light: Bright light to full sun. Pansies like it cool, so if you live where the summer is hot, keep your plants in partial shade. Water: Keep the soil moist at all times, but don’t over-water. Dry soil will cause flowers to fade quickly.

Where do pansies grow best?

Pansies perform best in cooler weather, and are therefore usually planted in spring or fall. They like rich, well-drained soil high in organic matter, and full sun or partial shade. (Shade is especially beneficial south of Zone 7 where the hot afternoon sun will shut down flower production.)

Can pansies get too much sun?

Sunlight Needs for Pansies Placing them in partial shade will give them a break from the hot afternoon sun which can be strong even earlier in the spring months. Too much sunlight will make the pansies stop producing flowers.

What do you do with pansies in the summer?

Water pansies throughout the summer, whether they are in the ground or in containers, but temporarily stop fertilizing them during the hot summer. Begin feeding your pansies again with a balanced water soluble organic fertilizer in late summer. Use a diluted solution once or twice a week at first to get them started.

What do you do with pansies after spring?

After flowering, the blooms fade and in their place seeds appear. The pansy seeds remain dormant until the following Spring. Pinch the spent flowers from the plant and cut back any extra growth. As the pansy flowers, check it regularly as often as twice a week for any spent blooms and remove them.

What temperature can plants survive outside?

Seedlings, with their tender new leaves, often give up the ghost when temperatures dip to 32-33°F. Tropical plants have differing low-temperature thresholds. Some keel over when temps fall to 40°F; others crumble at 35°F. Other plants are just hardy by nature and can withstand temperatures as low as 18-20°F.

Will my plants be okay outside tonight?

Wait until nighttime temperatures are consistently above 55 degrees and there is no danger of frost. Move houseplants to your porch or patio gradually; you don’t want to shock them with a sudden change in their environment.

Can it frost at 39 degrees?

So if the forecast is for a temperature of 39 degrees, the ground may be close to freezing. How fast is the wind blowing? A strong wind inhibits the cooling of the surface, and thus frost. … If it is to be a clear night then frost is more likely to develop.

How do I save my pansies?

Cut each plant back to one-half its previous height. Pansies will grow back quickly and begin blooming anew. Lay a 2-inch layer of bark mulch around the base of the plants in late spring. Rejuvenate overgrown or leggy pansies by trimming them back.

How do you make pansies last longer?

To keep them blooming as long as possible you must ‘deadhead’ them. Deadheading is simply removing any faded or diseased blooms… Cut off any blooms that are fading or have already faded using shears or scissors. You must cut off the blossom stem just above the first set of leaves.

Can you get summer pansies?

As a rule, pansy flowering season is from spring to summer in cool climates, then the flowers die back as temperatures rise. But pansy bloom time is fall to winter in hot areas.