Cabbage, Kale, Broccoli, Cauliflower, Brussel Sprouts, Kohlrabi, Collard Greens, Celery, Spinach, Peas, Asparagus, Rhubarb, Radish, Beets, carrots, Lettuce, Arugula, Onions, Potatoes, Swiss Chard-all can handle light frost, but keep a cover handy for a sudden really cold dip (below 25 degrees F).
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.
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.
Most evergreen conifers, however, that have a strong central leader, such as: Japanese red-cedar (Cryptomeria); fir (Abies); spruce (Picea); and cedar (Cedrus) can be covered in snow without it causing a serious effect.
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.
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.
Planters made from modern substances, like fibreglass, fiberstone, and non-porous plastic composites can safely remain outside over winter. Fiberstone planters are made from a mix of limestone and fibreglass, which forms a material that looks like stone but weighs a fraction of the natural material.
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).
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.
If you plan to overwinter your container rose outside, they should be in plastic or wood containers. Ceramic and terra cotta pots will crack if the endure freeze and thaw cycles. Right after the first frost winter protection should be applied, usually middle or late November. “Bury” the entire pot in leaves or mulch.
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.
Make sure you protect your rose bushes with the appropriate method. DO NOT PUT PROTECTION IN PLACE UNTIL JUST BEFORE THE GROUND IS EXPECTED TO FREEZE HARD. AND DO NOT REMOVE UNTIL THE EARLIEST SPRING BLOOMERS HAVE BLOOMED (in many parts of the country those are forsythia shrubs).
Turns out, many plants do pretty well under snow cover. “Snow can act as a blanket, protecting new growth from extreme temperatures and wind while keeping the plants moist,” says Brooklyn Botanic Garden curator Michael Mauro, who tends Bluebell Wood.
Both rain and snow contain nitrogen that plants need, but snow by its nature provides a better delivery method. Nitrogen attaches to snowflakes as the snow falls through the atmosphere. In addition, nutrients are slowly released into the soil as the snow melts.
But no, the agave americana is definitely from Earth. It's also known as a century plant because it only blooms once every 100 years (roughly) and then dies.
Stonecrop is one of the many common names for Hylotelephium telephium. Other common names are Alpine, Life-everlasting, Live-forever, Livelong, Orphan John, Orpine, and Witch's Moneybags. The plant was formerly known as Sedum telephium.