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How to Trim Alstroemeria

Alstroemeria, or Peruvian lily, blooms from late spring through midsummer. It adds colour to perennial flower beds, producing lily-like blossoms in shades of yellow and orange. Plants reach between 2 and 4 feet tall, making them a suitable background to lower-growing annual and perennial borders. Alstroemeria grows from tuberous roots, similar to bulbs. The roots go dormant in fall, but they are hardy enough to overwinter in the most gardens. Regular trimming encourages the alstroemeria to produce additional buds and blooms, while also keeping the foliage attractive and lush.

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  1. Cut off the old flower heads as soon as the blossoms begin to wilt, using a pair of clean shears. This process, called deadheading, prevents seed production and encourages the alstroemeria to produce more flowers.

  2. Trim back the flower stems to their base once all the buds along the stem have finished blooming.

  3. Remove yellowed or damaged leaves throughout the summer season. Cut these off where they emerge from the plant.

  4. Cut the entire plant back to within 3 inches of the ground after the foliage yellows and dies back naturally in fall. Remove all the removed leaves from the bed and compost or dispose of them.

  5. Warning

    Do not remove the foliage while it is still green. The leaves collect nutrients after the plant has stopped flowering, so premature removal can stunt next year's growth.

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Things You'll Need

  • Shears

About the Author

Jenny Harrington

Jenny Harrington has been a freelance writer since 2006. Her published articles have appeared in various print and online publications. Previously, she owned her own business, selling handmade items online, wholesale and at crafts fairs. Harrington's specialties include small business information, crafting, decorating and gardening.

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