Growing Amaryllis Indoors and Out

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Amaryllis forced for Christmas can be planted outdoors in the spring.

Amaryllis forced for Christmas can be planted outdoors in the spring.

Amaryllis bulbs are extremely easy and fun to grow, making them a wonderful gift for gardeners of all ages and experience levels. Bulbs purchased and potted now will bloom in three to six weeks, but the enjoyment does not end after the flowers fade. Amaryllis are hardy bulbs in southeastern North Carolina, which means they can be planted outside in the landscape in spring, to multiply and bloom for years to come.

Purchasing Amaryllis Bulbs

Many garden centers currently have Amaryllis bulbs or kits in stock. Kits usually include potting soil, a container and a bulb and make a great gift. Individual bulbs may also be purchased. Amaryllis bulbs that are sold for forcing have been prepared to bloom in winter by being kept dry and cool for a specific length of time. Bulbs should not be dug from the garden for forcing since they will not bloom at this time of year. When purchasing amaryllis bulbs, make sure you purchase a large, firm bulb free of cuts or bruises. Bulb size is important because the flowers the plant will produce are already inside the bulb. Larger bulbs will have larger flowers and will produce more flowering stalks. You will find amaryllis available in several colors, including shades of red, orange, pink, and white, with some being solidly one color while others are striped or shaded in various hues. Recent introductions include those with double flowers and miniatures, which are simply petite versions of their full size cousins.

Growing Amaryllis Bulbs

Growing amaryllis bulbs at home is simple. Containers used to grow amaryllis do not have to be much larger than the bulbs themselves. To pot an amaryllis bulb, fill the bottom part of the container with potting soil and place the bulb inside so the top 1/3 of the bulb is sticking up above soil level once the pot is filled. Water plants well to begin with and then only water when the potting soil appears dry. Also, make sure the container has drainage holes in the bottom – amaryllis do not like to grow in continuously wet soil.If you have a dish under your container to collect extra water pour it out after each watering rather than allowing the container to sit in water all the time.

It will usually take 3-6 weeks for amaryllis to flower when grown in a bright, sunny spot. Ideally, grow plants indoors at 65 – 75 degrees. Warmer temperatures encourage faster growth and earlier blooming. Place the plant in a cooler location once flowers appear to help blossoms last longer. While growing, be sure to rotate by a half turn each day to encourage the flower spike to grow straight rather than leaning toward the light.

Other than a sunny location and occasional watering, amaryllis need little care when grown indoors. Fertilization is not needed until after the plant blooms. Liquid fertilizers applied once a week or slow release fertilizer pellets sprinkled on top of the potting soil will do an equally good job. Once all of the flowers have faded, the flowering stalks should be cut off where it emerges from the leaves and the plant left to grow on in a sunny, frost free location.

Planting Amaryllis Outdoors

Amaryllis are hardy when grown outside in southeastern North Carolina and bulbs forced for Christmas can be transplanted into the landscape in spring where they will continue to grow and multiply for years to come. As a landscape plant, amaryllis are easy to grow, deer and vole resistant, and are adaptable to many sites, though they will grow best in a sunny to partly shaded site with well-drained soil. To transplant amaryllis outdoors, wait until the threat of frost has passed, around the middle of April. Plant them in the same manner as you do in containers – with the top 1/3 of the bulb sticking up above soil level. Once planted outside, amaryllis bulbs will return to their natural bloom cycle, producing blossoms in the spring rather than mid winter. A layer of mulch around the bulbs will help conserve moisture and prevent weeds.

Learn More!

Other bulbs available for forcing at this time of year include hyacinths and paperwhites. Learn more about forcing these bulbs from the following NCCE fact sheets:

Use Extension Search to find research based information from Cooperative Extension systems across the U.S.

Visit your local Cooperative Extension office to learn more about gardening and landscape care. Go to https://www.ces.ncsu.edu/local-county-center/ to find your county Extension center.

Contact your local Cooperative Extension office to get expert advice from an Extension Master Gardener Volunteer:

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Written By

Photo of Charlotte GlenCharlotte GlenState Coordinator, NC Extension Master Gardener Program (919) 515-1226 charlotte_glen@ncsu.eduHorticultural Science - NC State University
Updated on Dec 17, 2013
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