As winter nights turn crisp, the chilling reality of an impending freeze takes root. It is still not late to make a decision on what will you save from the summer garden to nurture over winter And the question that looms even larger: Where will these treasures stay warm and out of the way? Will it be another winter of Hibiscus in the kitchen, Geraniums in the bay window, and Ferns in the guestroom?
Storing your flowering and evergreen plants in a garage
There is a number of methods to store your garden holdovers without sharing personal space. The easiest, inexpensive method is with grow lights and a wooden bench or table. The garage makes a good place for this system as it stays cool but rarely freezes.
Plug the lights into a timer to automatically turn on each day for eight to ten hours. On warm winter afternoons, leave the garage doors open so your flowering plants can enjoy a bit of natural light and fresh air. Occasionally, put them out on the driveway for a shower and thorough soaking. This no-fuss system also works in a basement.
Setup a greenhouse
Turn the space under a deck or porch into a greenhouse. If the area above is open to weather, create a rain-free space underneath with rigid plastic sheets. Fasten them to the deck joists, angled so water drains away from the area. Enclose the sides with heavy, clear plastic. Cut lengths long so the bottom can be secured with concrete blocks to close out cold winter winds.
Another option is a portable greenhouse. The aluminum frame is lightweight and not recommended for places where heavy snowfall may occur. It is best suited to more temperate regions, where night temperatures stay above -6 C (20 F). Look for a unit with built-in vents or zippered windows to allow fresh air circulation.
Provide supplemental heat
Plants stored in free-standing structures may require heat during cold periods. Generally, a small electric heater will provide enough warmth to keep things toasty. Look for a sturdy, utility-type unit with a built-in thermostat and fan that automatically shuts down if tipped over. Set the heater away from plants and the sides of the structure. Always unplug the unit before watering.
Remember that winter is a time of rest for most summer flowers. Water occasionally, but not excessively. The most important need is grooming. Remove leaves that turn brown or fall off as insurance against disease and fungal problems. Come spring, these old friends will be ready for another season in your garden.