FIGS: WAIT, DON’T GROW!
Stay Asleep Please
If you garden in a cold winter climate, as do I, I hope you’re growing figs. Despite being tropical plants, figs are relatively easy for us to grow, as attested to by other gardeners, from Moscow to Montreal, Minneapolis and beyond.
San Piero fig, ripe
If you garden in a cold winter climate, I also hope that your fig plant is NOT growing now (unless you’re in the Southern Hemisphere). The way we cold-climate fig growers help our plants face winter cold is by protecting them from it. A usual method is to grow a plant in a pot that gets moved to a sheltered location to wait out winter. (Growing in pots plus four other methods of overwintering figs are described in my recent book Growing Figs in Cold Climates.)
Sometimes — too often — a fig jumps the gun on spring and starts growing in its sheltered location. Figs shed their leaves when they feel cold is just around the corner, so don’t need bright light in winter. But once buds awaken, they need all the light it can get.
Fig starting to wake up
Don’t fool yourself that a sunny window is sufficient light. The light there typically ranges from 2,000 to 5,000 foot-candles, while full sunlight outdoors is over 10,000 foot-candles. With insufficient light, growth becomes etiolated, that is, stretched out and pale as if reaching for light. And when the time comes for the plant to move outdoors, strong sunlight and drying winds will burn those etiolated stems.
Sleep Recipes
So the goal is to retard growth until outdoor conditions are more fig-friendly. If fully dormant, the plant can tolerate temperatures down into the low 20s Fahrenheit, even colder in a large enough pot. (Cold penetrates more deeply into smaller pots, and fig roots, like those of all temperate-zone plants, can’t tolerate as much cold as stems.)
Fig stems, dormant
The ideal situation is to be able to move a fully dormant fig plant outdoors while temperatures are still cold, but not cold enough to injure the stems or roots. Then buds gradually unfurl in synch with warming temperatures and increasingly intense sunlight.
My potted plants are fully dormant, the result, all winter, of keeping the pots in a cold room with minimal watering. Ideal winter temperatures for a fig are between the high 20s and low 40s. A barely or unheated garage, a cold basement, an unheated mudroom or attic, perhaps even a shed can all keep a fig asleep long enough.
Most of my plants get watered just once in winter. I lift the pots and can tell by experience from their weight whether water is needed. A soil moisture meter probe also works. They are in humid locations, either in my basement or in a walk-in cooler. Sealing each pot and soil, not the stems, in a plastic bag could cut down or eliminate any need for water.
Only one of my potted figs has already started growing. (I let it do so for this photograph.) My one growing fig is actually doing quite well, with new growth expanding slowly and robustly. 
Besides having its thirst quenched just enough to prevent wilting, it sits in front of a large, unobstructed window facing due south in a room whose temperatures range from the 50s and 60s. (That’s why I’m writing while sitting here in a down jacket!)
Shock Treatment
Okay, so you can’t provide ideal enough conditions, and your plant is overenthusiastic about winter’s end. Give it a little shock. Potted figs do need repotting every year or two to refresh soil nutrients and give roots new room to grow. If the plant is in as large a pot as you wish, the root ball needs to be slid out of the pots and sliced back to afford space for fresh potting soil.
The larger the plant, the more roots can be removed. I go around the edge of the root ball with a kitchen knife slicing an inch or two off around the edge of the root ball. That should tell Ms. Fig to chillax!
Stem pruning is another way to put the brakes on growth. And figs anyway benefit from annual pruning. How much to prune depends on the bearing habit of the fig, some varieties bearing best on new growth, some on one-year-old growth, and still others on both types of growth. (I refer you to my book for details about pruning figs.)
Fig fruits developing on new growth
Not to Worry
Perhaps you haven’t provided ideal winter conditions, you have no sun drenched windows, your home is warm, and you already repotted and pruned last fall. Don’t give up. Worst case scenario is that sappy, etiolated stems have emerged on your fig plant. Once outdoor temperatures moderate, you have three choices.
Gradually acclimate the plant to the great outdoors in much the same way as is done with tomato seedlings. Start the plant with a week or so in an outdoor location protected from full sunlight, wind, and freezing temperatures, moving it periodically indoors if conditions make it necessary. Gradually move it to the more exposed location of its summer home.
Second choice. Move the plant immediately to its summer home, but prune back growing stems, which, anyway, will likely burn.
Third, and easiest, choice, is to move the plant immediately to its summer home. Period. You’ll see some dieback and burning, but the plant should survive unless it’s very young or very weak.
The nice thing about growing figs, and one of the thinks that makes it possible to grow them in cold climates, is that they are very forgiving plants. More so than you might imagine.
OMINOUS HOUSEPLANTS
Poinsettia Absolved
Sunny temperature reaching the 50s a few days ago enticed me outdoors for pruning. Today, with temperatures in the 20s, I’m back indoors (except for a very pleasant cross-country ski tour earlier) looking over what plants I have, or might have, growing indoors. Their ominous or not so ominous sides.
Mention poisonous houseplants and most people immediately think of poinsettias. Actually, poinsettia’s bad reputation is unfounded. The plant’s not really poisonous. Only a masochist would be able to ingest enough of this foul tasting plant to cause the occasional cases of vomitting that have been reported. This is not to pooh-pooh the toxicity of all houseplants. Many are poisonous.
No sane adult walks around the house plucking houseplant leaves to eat; the greatest danger from poisoning is to children. Ten percent of the inquiries to poison control centers across the nation concern plant poisonings, and the bulk of those inquiries concern children younger than three years. (But in only a small percentage of these cases does the child actually have symptoms of poisonings.)
Common Culprits
Years ago, I hosted philodendron and dumbcane (Diffenbachia spp.), two very common houseplants, in my home. These two plants are responsible for the first and second most reported poisonings, respectively.
Variegated philodendron
They are in the Araceae Family, a group of plants with needle-like crystals of calcium oxalate in their leaves and stems. When chewed, the crystals cause immediate pain in the mouth and throat, which commonly leads to swelling. This makes speech difficult and is the origin for the common name “dumbcane” for Diffenbachia species. Ingest enough leaves of either plant and vomiting and diarrhea, even death, could follow. Other houseplants in this family include elephant’s ear (Alocasia spp.), flamingo flower (Anthurium spp.), and caladium (Caladium bicolor).
Anthurium
Caladium
The “philodendron” that I grew and many people grow is commonly known as Swiss cheese plant, for its large, holey leaves. Botanically, it’s not a Philodendron, although it was originally classified as one. Now it’s botanical name is Monstera deliciosa. Deliciosa! A poisonous plant? This is one member of the Araceae that bears an edible fruit. The fruit resembles an ear of corn and tastes something like a combination of pineapple and banana. That’s when it’s ripe. Unripe, not so tasty, rich in oxalic acid, and poisonous.
Poinsettias are ranked third as far as the number of reported (not actual) poisonings nationwide. Although poinsettia really is not toxic, it’s a member of the Spurge Family, a family which includes many toxic plants. Guilt by association, perhaps. Members of the Spurge Family contain a milky latex in their sap, and this latex can cause dermatitis. A houseplant Spurge that does warrant caution is the Crown-of-Thorns, which, as long as we are talking about danger to children, also is heavily armed with stout thorns.
Now is the time of year when blooms on forced bulbs carry gardeners through the last leg of winter before spring planting. Most of these bulbs are in the Lily Family,
another family with many poisonous members. The daintiness of Lily-of-the-Valley belies the fact that it contains a potent cardiac glycoside (much like the digitalis found in foxgloves), which even leaches into the water of cut flowers. Hyacinths are wonderfully fragrant, yet also toxic. All parts of sunny daffodils contain lycorine, a toxin that can cause dermatitis with skin contact, and diarrhea and convulsions if ingested.
That toxin, lycorine, also is found in another winter bulb, amaryllis (Hippeastrum spp.), though amaryllis is not in the Lily Family.
And More
A few other houseplants in widely scattered plant families also are worth mentioning for their toxicity. Jerusalem cherry (Solanum pseudocapsicum), a houseplant with brightly colored berries, is in the Deadly Nightshade Family. The family name should tell you something about the plant’s toxic properties. Not all members of the family are toxic in the amounts normally ingested; if so, we’d have to give up eating tomatoes, eggplants, peppers, and potatoes.
Mistletoe is not a houseplant per se, yet it is a plant in the house at Christmas. The white berries, which tend to fall to the ground as the plants dry out, are toxic.
English ivy is a plant that is grown both indoors and outdoors. Unfortunately, its leaves are also toxic.
I don’t like to cast a somber cloud over these houseplants, but it’s important to know which are toxic so as to keep them beyond the inquisitive reach of very young hands. If a child does manage to ingest a plant, save part of the plant for positive identification, and then call a poison control center (http://www.aapcc.org/DNN/). It is not always advisable to induce vomiting, because this can further spread irritating materials.
Now why does an otherwise friendly looking plant — a philodendron, for instance — have to strike a menacing chord with a toxin in its leaves? Inside our homes, overwatering or underwatering probably is the major threat to any houseplant’s existence. But out in the jungle, a philodendron needs some way to ward off a big gorilla who might find the leaves an appetizing salad. In this case, a burning, swollen mouth is a good deterrent.
AN ICEY BEGINNING, WITH KIWIS
Pruning Weather
Yesterday was a fine day for pruning, windless with a sunny sky and a temperature of 19 degrees Fahrenheit. The ice storm had turned this part of the world into a crystal palace, with branches clothed in thick, clear sleeves of ice. 
From an auspicious vantage point, a pear tree glowed like a subdued holiday tree as hints of sunlight’s reds and blues refracted from the natural prisms on the branches.
Witchhazel flowers
What a pleasant setting for pruning! The usual recommendation is to hold off pruning until after the coldest part of winter, which typically occurs in late January and early February, is over. I’ll admit to rushing outdoors, pruning shears in hand, before that time period, with some plants not long after they dropped their leaves in autumn. That was with plants, such as gooseberries and currants, least likely to be damaged by cold weather.
I was anxious to begin pruning in earnest as an excuse to get outdoors and because I have lots of plants to prune, mostly fruit plants. It all needs to be done before leaves unfurl in spring. And, as spring inches closer, sowing seeds, spreading compost, and other gardening activities increasingly vie for my time.
So I’m out in the crystal palace working on my hardy kiwifruit vines (Actinidia arguta and A. kolomikta). In case you’re unfamiliar with this plant, it’s a dead ringer for the fuzzy, kiwis you see in the markets — except that hardy kiwifruit is grape-size with a smooth, edible skin. The resemblance is even greater beneath the skin — except that hardy kiwis are sweeter and more aromatic. And while a fuzzy kiwi vine will sulk or die back below 10 degrees Fahrenheit, hardy kiwis tolerate winter weather below minus 20 degrees Fahrenheit.
Kiwi Training and Pruning
A hardy kiwi vine bears fruits on new, growing shoots originating off one-year-old stems. 
The goals in pruning are to keep the plant reined in to a convenient size for easy harvest, to eliminate enough stems so that those that remain bathe in sunlight and air, and to coax growth of new stems off which will emerge, the following year’s fruiting shoots.
Kiwi vine, before pruning
Pruning also removes plenty of one-year-old stems. That cuts down yield but lets the vines pump more goodness into fruits that remain, for better flavor. (Pruning kiwis is described and also diagrammed in my book The Pruning Book.)
Training a kiwi vine to some sort of system keeps the vigorous growth organized. My plants grow on a trellis of metal or locust T-posts spaced 15 feet apart, with 5 wires (actually nylon monofilament) running perpendicular to and spaced out across to the tops of the T’s. Each kiwi trunk runs from ground level up to the middle wire, at which point it bifurcates into two permanent arms, called cordons, running in opposite directions along the middle wire. Fruiting arms grow out perpendicularly to the cordons and the wires, draping themselves over the two outermost wires on either side of the the cordons.
I actually began pruning a couple of weeks ago, starting to disentangle the stems by walking along on either side of the row with my cordless hedge shear, shortening any stems to a few inches beyond the outermost wires. Yesterday I began cutting any two-year-old stem — any stem that fruited last summer — back to its origin or to a one-year-old stem near the its origin. The one-year-old stems, those a little more than pencil thick of moderate vigor, will bear fruiting shoots this year in late summer or fall.
After all this pruning, plenty of one-year-old stems remain, too many for top notch fruit. So I’ll move down the cordons and remove enough one-year-old stems so that none is closer than eight to twelve inches from its neighbor.
Not done yet. In spring, after growth has begun, I’ll clip each one-year-old stem back to about 18 inches.
If you grow grapes, you probably noted that they bear and can be pruned similarly to the kiwis. I even grow some grape vines along the same trellis as the kiwi vines.
The main difference is that grape vines’ one-year-old shoots can be cut back more severely than the kiwi stems. Mine get shortened to a couple of buds each, which is only about three inches, from the cordon; it’s called spur pruning. Everything else is the same.
Ice is Nice, Sometimes
Those sleeves of ice on the kiwis actually made pruning easier. A sharp tug on a cut stem quickly disentangled it and let it slide free from its neighbors.
All this ice did, of course, weigh down branches of large trees which, coupled with strong winds after the storm, sent many limbs plummeting to the ground. Particularly surprising were my birch trees, a tree known for the limberness of its trunk, a characteristic immortalized in Robert Frost’s poem Birches:
I’d like to go by climbing a birch tree,
And climb black branches up a snow-white trunk
Toward heaven, till the tree could bear no more,
But dipped its top and set me down again.
That would be good both going and coming back.
One could do worse than be a swinger of birches.
This storm was more than two of my multi-stemmed birches’ trunks could bear; they cracked. But Mr. Frost was writing about white birches. Mine are river birches.
