Forcing Bulbs Indoors for Winter: Amaryllis, Hyacinth and Daffodil

Forcing a bulb simply means tricking it into flowering indoors, out of season, on a date you choose. Three bulbs do this reliably for beginners: amaryllis, hyacinth and narcissus (the small daffodils sold for forcing, including paperwhites). Between them you can have something in flower from early December through February.

The three, compared

Amaryllis: no cold, all warmth

Plant the bulb so that a third of it sits above the compost line — the neck must not be buried. Water once, then keep the pot at room temperature and wait. Roots form first, then a flower bud pushes up before any leaves, which looks alarming but is normal.

Turn the pot a quarter-turn every few days so the stem grows straight, and stake it once the flower opens; a 60 cm stem with four 20 cm flowers is top-heavy. Six to eight weeks from planting to bloom is typical, so plant in early November for Christmas.

Hyacinth: the cold is the whole trick

Hyacinths need a simulated winter. Pot them, water once, then keep them at 5–9°C in the dark for ten to twelve weeks — a garage, a cold frame, or the salad drawer of a fridge if you have room. Roots must stay moist but not wet.

When a green shoot is 3–4 cm tall, bring the pot into light and warmth. Flowering follows in three to four weeks. Skip the cold period and you get a stubby stem with flowers buried in the leaves.

Pre-chilled bulbs sold in autumn have already had their cold treatment. Those you can pot and bring straight indoors.

Paperwhites and small narcissus: the fastest

These will flower in four to six weeks with no cold at all. Set them on a 3 cm layer of pebbles in a bowl, add water to just below the bulb bases, and top up as it evaporates. Keep the bowl cool and bright for the first two weeks so the stems do not stretch.

Paperwhites are famously top-heavy and famously smelly. If the scent is too much indoors, grow them in a cool porch, or choose a narcissus variety described as lightly scented.

Stagger the planting, not the watering

The easiest way to have flowers all winter is to plant in batches rather than all at once:

Choosing bulbs worth forcing

Size is everything for amaryllis. A bulb under 5 cm across may flower, but on a short stem with two flowers instead of four. Look for 28/30 cm or larger circumference if the listing gives it, and firm, heavy bulbs with no soft patches at the neck. Cheap mixed amaryllis is usually small bulbs from unnamed varieties — fine for a first try, disappointing next to a named one.

For hyacinth, buy “prepared” or “pre-chilled” bulbs if you have no cool space; otherwise you need ten to twelve weeks at 5–9°C. Paperwhites are the least fussy of the three: any firm bulb will flower, and the only choice that matters is whether you can tolerate the scent.

Water and light once they are growing

More houseplants are lost to overwatering than underwatering, and forcing bulbs are no exception. Water when the top 3 cm of compost is dry; never let the pot stand in a saucer of water. Bright, cool light keeps stems short and flowers deep in colour — a warm, dark room gives you pale flowers on floppy stems.

After flowering

Amaryllis is worth keeping: cut the flower stem, keep watering and feeding the leaves, and it will flower again next winter. Hyacinth and paperwhite bulbs forced indoors are usually exhausted — compost them and buy fresh next autumn. Detailed aftercare for amaryllis is in the amaryllis care guide.

Quick answers

Can I force bulbs in water only? Paperwhites and hyacinths, yes. Amaryllis needs compost to support the stem.

Why are my stems so long and floppy? Too warm and too dark in the first two weeks. Move them somewhere cooler and brighter.

When should I start for Christmas? Amaryllis in the first week of November, paperwhites in the third week of November.

Can I reuse the compost? For forcing, yes — but not for seeds or cuttings afterwards.

Shop the bulbs: red amaryllis, amaryllis for indoor growing, hyacinth and narcissus daffodil.

Read next: Rain lily care guide · Why rain lilies don’t bloom · Forcing bulbs indoors for winter