Winter pansies are cold weather all-stars. These cheery winter blooming flowers can freeze solid and emerge from that state ready to grow and flower. Other bedding plant flowers that grow in winter include nemesia, snapdragon, sweet alyssum and flowering stock.
SNOWDROPS (Galanthus nivalis)
True to their name, these early-blooming bulbs often emerge while snow is still on the ground to provide a breath of fresh air for winter-weary gardeners. In mild winters, snowdrops can flower as early as late January, but February or March is more common.
Keep them away from direct sunlight and heat vents, as well as cold drafts near a window or door in winter. Avoid placing your arrangement near ripening fruit, which releases tiny amounts of ethylene gas that can age flowers prematurely. And finally, most cut flowers benefit from a daily mist of water.
'Autumn Joy' is a perennial flower that blooms all year and that can be grown in zones 3-9 across the variety of climates that can be found in these zones. This sturdy sedum provides the landscape with reddish-pink flowers in late summer.
The list of the hardest plants to take care of varies from gardener to gardener. However, the lists often feature Orchid, Gardenia, Fiddle Leaf Figs, and Boston Fern.
Fresh Flowers & Roses should not be placed in either the refrigerator or the freezer! The Refrigerator generally hosts a variety of fruits & vegetables that emit ethylene gases which can shorten the life or even kill your fresh flowers & roses. The Freezer is simply too cold!
With that in mind, experts generally recommend flowers and other houseplants be brought inside or otherwise protected before the thermometer dips below 45 degrees Fahrenheit. For warmer-weather and tropical plants, that threshold is a bit higher, at around the 50-degree mark.
Hard, severe or killing freeze
(It can depend on how protected your flowers are in your yard.) This is also the freeze that kills most remaining annuals. There are a few exceptions. Pansies and violets, for example, are tenacious little flowers that can survive these freezing temperatures.
Japanese yew (Taxus cuspidata) is a good choice for an outdoor winter plant because it's an evergreen that keeps its leaves on its branches all winter long. It's drought-tolerant and thrives in both full and partial sun. Hardy to Zone 4, Japanese yews can survive harsh winters.
Name: Helleborus sp. commonly known as winter rose or Hellebore. Belongs: to the buttercup family Ranunculaceae. Origins: Europe to western China. Flowering: Winter to early spring.
Christmas Rose. This evergreen perennial blooms from winter to early spring depending on the selection and where you live (mostly early winter in warmer regions, and as late as February or March where it's very cold).
During the growing season, the plant stores energy in its roots, bulb or corm (aka rhizome)—the part where the stem and root meet). That energy allows it to go dormant in the winter, much like an animal might hibernate. When conditions like temperature are right the next spring, the plant begins to grow again.
Roses, in general, can survive winters in USDA Hardiness Zones 6 and above (or in temperatures as low as zero degrees Fahrenheit). As such, they can survive very cold climates, but you should still prepare to winterize them to ensure they have all they need to thrive throughout the winter months.
I did some research and found out that houseplants need to be taken indoors before overnight temperatures dip below 45 degrees. Most tropical plants suffer harm from temperatures below 40 degrees.
Light freeze - 29° to 32° Fahrenheit will kill tender plants. Moderate freeze - 25° to 28° Fahrenheit is widely destructive to most vegetation. Severe or hard freeze - 25° Fahrenheit and colder causes heavy damage to most plants.
Most roses can withstand a quick cold snap of temperatures down to 10 degrees F, but it is best to protect them if you expect an extended period of time when temperatures dip under 20 degrees F. The amount of protection your roses need depends on the climate in which you live.
Flowers can be particularly sensitive to their environment. Even if they are quite hardy, they can still wilt prematurely if they are exposed to extreme conditions. Some flowers do enjoy cooler temperatures than others but, for the most part, near freezing temperatures will do more harm than good.
Freezing temperatures don't harm dormant plants. However, freezing temperatures can damage new spring growth, especially flowers. As flower buds begin to swell, they become increasingly vulnerable to cold temperatures. They are most vulnerable just before, during, and after bloom.
Keeping the flowers at a cool temperature throughout the whole process is crucial. As flowers and their leaves contain 70% to 95% water, storing them at the correct humidity to keep them hydrated is also important. Extend their life by an additional eight days by having a humidity count of 80% in the storage room.
Coneflower (Echinacea purpurea)
The ultimate hardy perennial, there is little that will defeat Coneflowers. Coneflower is tolerant of heat, humidity, drought, and poor soil. Butterflies, bees, and hummingbirds love the flowers, and deer won't mess with them.
Daylily. Practically indestructible, daylilies (Hemerocallis) will flower profusely in almost any sunny spot. They're drought-tolerant and insect-resistant and offer a wide range of colors and bicolors.
Amaranth is an extremely colourful outdoor plant with many decorative possibilities. It comes from the Americas, from where it was exported to Europe by the first colonists. The meaning of amaranth is “immortal”, as in the old days is was considered to be a real flower of immortality because of its many benefits.