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Saturday, November 12, 2011

Non-floppy Paperwhites


Paperwhites are one of the most popular bulbs for forcing during the gloomy winter months but the one problem there has been with them is that they flop over once they start blooming.  Well, now there is a solution to the problem.  A study done by the Flowerbulb Research Council at Cornell University has discovered that a dilute solution of alcohol instead of regular water shortens the paperwhites by about 1/3 but the flowers stay their usual size.

What to do
We suggest planting your paperwhite bulbs in stones, gravel, marbles, glass beads, etc. as usual. Add water as you normally would, then wait about 1 week until roots are growing, and the shoot is green and growing about 1-2" above the top of the bulb. At this point, pour off the water and replace it with a solution of 4 to 6% alcohol, made from just about any "hard" liquor.  That means, to get a 5% solution from a 40% distilled spirit (e.g., gin, vodka, whiskey, rum, tequila), you add 1 part alcohol to 7 parts of water. This is an 8-fold dilution yielding 5% alcohol.

Then, simply use this solution, instead of water, for further watering of your bulbs. It's as simple as that.  The result will be a plant that is 1/3 shorter, but with flowers just as large, fragrant, and long-lasting as usual. The plant will be nicely proportioned and won't need support stakes, wires, or other gizmos to keep it upright. You will see results within just a few days.

A few other thoughts
•    Do not use beer or wine, as the sugars in them will cause major problems with the plants
•    As with humans, paperwhites can also suffer alcohol overdoses!  We suggest 4-6% alcohol as a normal and safe range. If plants are given much more than 10% alcohol, growth problems will start, and 25% alcohol is dramatically toxic. So, moderation is the key!
•    It is not strictly necessary to pour off the water after the plants are rooted (as we suggest above). You can just as well add your 5% alcohol without pouring the water off. The result, though, will be a lower than optimal alcohol concentration around the roots, and, ultimately, growth will not be reduced as much as you expect. The reason to pour off the water is to simply maximize the alcohol level around the roots.
•    Basically, the higher the alcohol concentration (within reason), the shorter the plants. So it is not critical whether you use 4, 5, or 6% alcohol. Just stay well below 10%, where growth problems become noticeable.
•    If you do not have alcohol for consumption in your household, rubbing alcohol (isopropyl alcohol) works just as well. Since this is usually 70% alcohol when purchased, a dilution of 1 part rubbing alcohol to 10 or 11 parts water is appropriate.
•    Why does this happen? It is believed that it is simply "water stress", where the alcohol makes it more difficult for the plant to absorb water. The plant suffers a slight lack of water, enough to reduce leaf and stem growth, but not enough to affect flower size or flower longevity. 




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