Category: The Gardening Guy

Forcing spring bulbs

Tips for getting them to bloom indoors

At this point, the garden is put to bed — or if I’ve neglected to do something, it probably won’t happen until spring. But this is a good time to force bulbs for early spring blooming indoors.

To force bulbs means preparing them in such a way as to force them to bloom early indoors, before they would bloom outdoors. Daffodils or crocus, for example, can be made to bloom by mid-February indoors, and tulips in March.

On a raw day recently I planted 20 “Tete-a-Tete” daffodils in pots. Each of these will produce one or more brilliant yellow blossoms just when I’m sick of winter, and renew my faith that spring is on the way. Bulbs have everything they need in order to bloom. All we have to do is offer a suitable place to spend the winter. Here is what I did:

First, I selected nice deep pots for planting. In the soil outside, daffodils are planted with six inches of soil over their pointy little noses. But in a pot, three inches is fine. I selected pots that were five or six inches deep, and placed three inches of potting soil in each. It’s fine to place the bulbs close together, just a couple of inches apart.

The potting soil I used was already damp, but after the bulbs were covered and ready for their winter sleep, I watered lightly. I will check them from time to time throughout the winter to make sure the soil does not dry out. The bulbs need moisture to develop roots and prepare to bloom. But be moderate: A soggy soil mix can rot roots.

I have a cold basement that I keep lightly heated to avoid freezing temperatures — my old house is set on a hill, and the basement is above ground in the back of the house where I keep my bulbs. The ideal temperature for forcing bulbs is around 40 degrees for good root development. You can begin the process by leaving your pots outdoors until real cold weather is upon us. Cover the pots with leaves to minimize temperature fluctuations.

If you have a warm basement, you can try placing pots in an unheated garage or mudroom, or perhaps in the bulkhead if you have one. Everything I have read says to keep the pots in a dark place, though I think that only matters once the bulbs have started to send up leaves or buds. The bulbs can’t know about light while covered with soil. So put the pots in a cardboard box if you have them in a garage with windows.

How long do bulbs need to stay dormant? The little bulbs — crocus, snowdrops and such — only need eight to 10 weeks, daffodils need 12 weeks, and tulips need 16 weeks. I always place a plant tag in the pot with the date I started the process. And tulips will not bloom if you bring them into the warmth of the house before March.

Beware of mice and squirrels! Most old houses harbor at least a few mice. Once the mice got into my pots and ate all the tulip bulbs! Daffodils are mildly poisonous, so rodents will not bother them, and I’ve never had trouble with mice eating any alliums, which are good for forcing, too. I’ve had mice dig up bulbs, only to find they were daffodils and leave them on top of the pots, those rascals.

One way to know if your bulbs are ready is to look for roots poking out through the drainage holes of the pots. If you have daffodils that you planted 12 weeks ago but have not sent out any roots, they may be ready, but it would be safer to wait another week or two. Once you bring your bulbs up into the house it will take two to four weeks more for them to bloom. Place the pot on a south or east windowsill and check daily. Water if the soil surface feels dry.

Will the bulbs bloom again next year? Tulips probably will not ever bloom again for you, even if you plant them outdoors in the spring. Daffodils can bloom again, but might take a couple of years to rebuild their energy enough to bloom.

Paperwhites are bulbs that can be forced without soil and an extended dormant cold period. These beauties are in the daffodil family and are sold for forcing in a bowl of gravel and water on a sunny windowsill. Most have a very strong fragrance, though not everyone likes it.

Select a deep bowl without a drainage hole. Place a one- to two-inch layer of gravel or small stones in the bottom, then place your paperwhites on it, shoulder to shoulder. Add water to the bowl until it just kisses the bottom of the bulbs. You don’t want water so deep the bulbs are wet; it is just for the roots that will grow.

Next add more stones or gravel up around the bulbs. This will help to keep your flower stems from tipping over. Another way you can do is to keep stems short by giving them some gin! Start them in water, and after a week drain the water, and add a mixture of five parts water to one part gin. That will stunt the growth. Paperwhites started by the third week of November should bloom by Christmas. They will never bloom again, so put them in the compost after blooming.

Featured Photo: Paperwhites are easy to force in pebbles and water. Courtesy photo..

Eating fresh

Try Brussels sprouts, broccoli and other fall veggies

Cut away fhe fine roots of celeriac to expose the bulbous root used for cooking or even salads. Courtesy photo.

Granted, I have a vegetable garden mainly so I can have fresh, succulent tomatoes from July until some time in October. But I also have grown, I think, all vegetables that will grow in our climate. Right now, in late October, my saved tomatoes are all eaten, but I am enjoying plenty of other fresh veggies, and I am storing others for eating later.

For late fall, nothing beats Brussels sprouts. The trick to having good Brussels sprouts is to cut off the top of the plant in early September. I say do it on Labor Day, but even a bit later is fine. If you fail to do that, the plants will use all their energy to grow taller and taller. If you cut off the top three inches and it stops growing taller, it sends its energy to bulking up those cute little green “cabbages” that pop out of the stalk. Some years I’ve continued picking until late December, despite snow and cold.

Now I realize that for many people, a serving of Brussels sprouts is as appetizing as dead skunk left on the side of the road for a couple of days before serving. Those are people who probably were served overcooked sprouts in public schools. Mushy, grayish-green sprouts are not appetizing.

If you cook your sprouts “al dente,” you may change your opinion. Steam them until just tender enough to spear with a fork, or cut them in half and sauté in butter or olive oil and walnuts, and you may change your mind. I happen to like steaming them, then sprinkling Marukan brand seasoned gourmet rice wine vinegar over mine — tasty, and without the calories of the butter preferred by many.

Kale gets tastier as the season goes on. A few hard frosts sweetens it up, and if the deer don’t get it after snowfall, I often have it until Christmas. I like it in a breakfast smoothie: In a blender I put two leaves of kale with midribs removed, a banana, a cup of orange juice and a cup of water, some fresh ginger (to taste), the juice of half a lime, and some frozen blueberries or raspberries from the garden and stored in the freezer.

Kale can also be used for salad. Our friend Eliza Bergeson makes a great kale salad: She removes the midrib and chops the kale. She then massages it for about five minutes with a dressing of olive oil and lemon. She adds honey mustard, salt and pepper. The massaging makes the kale tender and works in the dressing. She adds feta cheese crumbs, dried cranberries, walnuts and fresh red peppers for color.

My broccoli continues to produce side shoots, despite the frosts. If you keep on cutting them off, they keep on flowering. Some years I grow non-heading broccoli relatives. One is called piricicaba, the other Happy Rich. Neither produces a big head, but both produce lots of little florets and persist well into the fall. I get seeds from Johnny’s or Fedco and start them in April, as these are not readily available as starts in most garden centers.

I just harvested a five-gallon pail of celery root, or as it is often called, celeriac. This is a celery relative that is grown for its roots, not stems. The leaves look and smell the same, but celeriac does not produce edible stalks. I clean and chop celeriac roots and chop them to use in soups and stews. It has a nice celery flavor.

I start celeriac in March by seed indoors. It is a slow grower at first, but once in the ground it takes off if in moist soil and full sunshine. Spacing is important, too. Crowd celeriac and you’ll get little. This summer I spaced them six inches apart in three rows eight inches apart in one wide bed, and they did well. I watered in dry times.

I also just harvested a five-gallon pail of leeks. Leeks are great, in my book, because you can use them in lieu of onions when cooking, and unlike onions, you can freeze them.

Leek and potato soup is one of my fall favorites. I just made some, and here is what I did. I started by dicing and frying two or three strips of thick-cut bacon in a large cast iron, enameled pot. Of course, vegetarians can substitute butter instead. Then I added some olive oil and four cups of potatoes, cut into half-inch cubes. I browned the potatoes a little, then added four cups of leeks. Since I am rich in celeriac, I chopped up a whole one and added it to the mix.

Then I added eight cups of water and simmered slowly. I added 1½ teaspoons of a dried herb called herbes de Provence. That is a mix of various Mediterranean spices (savory, marjoram, rosemary, thyme, oregano and lavender). And I added a couple of tablespoons of vegetarian vegetable broth powder (Seitenbacher brand) to give some added flavor. Then I added a handful of fresh chopped parsley.

I cooked the soup until the potatoes were done. I used a red-skinned potato I grew this year, one called Fenway Red. It is a productive potato and holds together well in a soup. Just don’t overcook it. I like a milky leek and potato soup, but don’t like to cook the milk, so I just added a quarter cup to each bowl at serving time. Yum!

As with any soup, I vary my leek and potato recipe whenever I make it. Sometimes I add dried cherry tomatoes or peas. Kale would be good — it goes well with potatoes at my St. Patrick’s Day meal, colcannon. That’s the great thing about fresh vegetables. You can’t go wrong.

So when you plan your garden for next year, be sure to grow some veggies that survive frost and are tasty on a cold fall night.

Featured Photo: Leeks are easy to grow and a good substitute for onions when cooked. Courtesy photo.

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