Forcing Bulbs
Who can resist those pots of blooming daffodils, crocuses and hyacinths sold in stores during the winter? These bulbs are fooled into thinking it’s spring, a feat you can accomplish rather easily at home. Most bulbs need a cooling period before they will produce foliage and flower—exceptions are amaryllis and paperwhites, a delicate-blossomed, fragrant species of narcissus (Narcissus tazetta). To force paperwhites, plant bulbs in shallow pots (3–4 inches) lacking drainage holes, and fill with 1–2 inches of gravel or pebbles. Plant bulbs close together with the tops exposed, and water only up to the base of the bulbs. Paperwhites can also be planted in soil in pots with drainage holes; include at least 2 inches of soil beneath the bulbs. Store pots in a cool, dark location until roots develop (2–3 weeks), then place in a sunny spot indoors. Paperwhites usually bloom in 3–5 weeks. Other bulbs need a cooling period during which they will develop roots. A refrigerator or cellar is a good holding area. The amount of cooling time varies with the type of bulb. Narcissus (other than paperwhites) need 15–17 weeks; hyacinths, 10–14 weeks; crocus, 15 weeks. Plant them in soil in pots and place in cold storage for the recommended amount of time. Not all bulbs are suitable for forcing; check plant labels.