That Holiday Poinsettia … Grow It or Throw It?

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Red Poinsettia

If you’re like me, you hate to throw a living plant away.  But do you really want to deal with those 5 Poinsettias you bought at Trader Joes to brighten up your living room?  I mean, they were only a couple of bucks … right?  But still …

It’s that “but still” that gets me in trouble every time. I guess it’s the thrifty Swede in me that hates to throw perfectly good things – particularly perfectly good – living things – away. So if you have no problem tossing, read no further.

However, if you’d like the environmentally-friendly, green task of redeploying your poinsettia(s) into next season, here is a step-by-step guide that, with proper care, dedication and a certain amount of luck, you too can make happen. And, if successful, you will receive the “Great Green Thumb Award,” for gardening above and beyond the call of duty!

Begin Here!

  • By late March or early April, cut your poinsettia back to about 8″ in height. Continue a regular watering program, and fertilize your plant with a good, balanced all-purpose fertilizer. By the end of May, you should see vigorous new growth.
  • Place your plants outdoors, where they can bask in the warmth of spring and summer, after all chance of frost has passed and night temperatures average 55° F or above. Continue regular watering during the growth period, and fertilize every 2 to 3 weeks.

    White Poinsettia Tree
  • Pruning may be required during the summer to keep plants bushy and compact. Late June or early July is a good time for this step, but be sure not to prune your plant later than September 1. Keep the plants in indirect sun and water regularly.
  • Around June 1, you may transplant your poinsettia into a larger pot. Select a pot no more than 4 inches larger than the original pot. A soil mix with a considerable amount of organic matter, such as peat moss or leaf mold, is highly recommended. In milder climates, you may transplant the plant into a well-prepared garden bed. Be sure the planting bed is rich in organic material and has good drainage.
  • The poinsettia is a photoperiodic plant, meaning that it sets bud and produces flowers as the Autumn nights lengthen. Poinsettias will naturally come into bloom during November or December, depending on the flowering response time of the individual plant. Timing to produce blooms for the Christmas holiday can be difficult outside of the controlled environment of a greenhouse. Stray light of any kind, such as from a street light or household lamps, could delay or entirely halt the re-flowering process.

    Marbled Poinsetta
  • Now this is the really boring part! Starting October 1, the plants must be kept in complete darkness for 14 continuous hours each night. Accomplish this by moving the plants to a totally dark room, or by covering them overnight with a large box. During October, November and early December, poinsettias require 6 – 8 hours of bright sunlight daily, with night temperatures between 60 – 70° F. Temperatures outside of this range could also delay flowering.
  • Continue the normal watering and fertilizer program. Carefully following this regime for 8 to 10 weeks should result in a colorful display of blooms for the holiday season!

Good luck and let me know how it all turns out.

One thought on “That Holiday Poinsettia … Grow It or Throw It?”

  1. What a great tip. I’m stealing this for my sites! I’m marking my garden calendar with the various time-points. You see too many ‘rescued’ plants in gardens that just don’t get the proper care.

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