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Harper Stewart

on 21 March 2014

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Transcript of FLOWER POWER

So, lets cut to the chase: Whats the point of Flower Power?
First, a little bit of
Background Info
Professor Lewis Knudson (1884- 1958) created a compound that stopped the growth of harmful bacterias on flowers and fruit (aka flower preservation)
Experiment Outline
The Effect of Different Methods of Flower Preservation on How Many Days it Takes for the Rose to Show signs of Wilting. (aka FLOWER POWER!)
Hi, my name is Harper Stewart, and this is my project...
The Effect of Different Methods of Flower Preservation on How Many Days it Takes For a Rose to Show Signs of Wilting.
* This allowed for Orchids, a tropical plant that was once very hard to grow in places such as the U.S.A., to be grown successfully in foreign habitats
Dr. Cai-Zhang Jiang oversaw the experiment of Thidiazuron, aka TDZ, which is an artificial/synthetic compound that helps plants thrive and last longer.

TDZ: an artificial version of a natural plant compound called cytokinin that helps potted, cut, and growing plants last longer

Other ideas on Flower Freshness:
Hot or cold water
Flower Food
Lemon Juice
Hair Spray

Lewis Knudson:
Independent variable:
Methods of Flower Preservation
Dependent Variable:
Number of Days Till the Roses Show Signs of Wilting.
1. Type of flowers (Roses).
2. Amount of water in each vase ( 1 & 1/2 cup)
3. Where the Roses are cut/height of the stem
If I use Aspirin, sugar, vinegar, or water as a flower preserver, then the vinegar will cause the roses to take the longest to show signs of wilting.
Testable Question:
What is the effect of different methods of flower preservation on how many days it takes for a rose to show signs of wilting?
Levels of I.V:
Water only
Water and crushed Aspirin
Water and 1tbs. (6.5 g.)of sugar
Water and 1tbs. (240 mL.) of vinegar
Number of Trials:
Unit of Measurement:

of days
1, 2, 3, etc.
Measurement Tool:
My log-book
Photos of the flowers
The vase with ONLY water in it!
1. Gather your materials...
1. 12 Roses of (similar sizes, color, etc.)
2. 12 vases of similar size (each one filled with 1 & 1/2 cup of water or 355.5 mL.)
3. 3 Aspirins; crushed separately
4. 3 tablespoons (6.5g. for each spoon) of sugar
5. 3 tablespoons (240 mL. for each spoon) of vinegar
6. A warm, sunlit setting suited for plant growth
7. Scissors
8. Spoon
9. Safety goggles ( if you don't have any, use sunglasses)
10. A safety breathing mask (or a scarf covering your nose and mouth)
11. Some device that can take pictures
12. Measuring cups: 1 cup and 1/2 cup
2. Put on your safety goggles and mask
at all times

during this experiment
3. Gather 4 vases and fill them with 1 & 1/2 cup (355.5 mL.) of cool water
4. Add a crushed Aspirin into the water of one of the vases. Mix the crushed Aspirin with a spoon until it disintegrates into the water
5. Add a tablespoon (6.5 g.) of sugar into the water if the 2nd vase. Mix the water solution until the sugar dissolves
6. Add a tablespoon (240 mL.) of vinegar into the water of the 3rd vase. Mix the vinegar into the water with a spoon until it completely dissolves
8. Gather 4 roses, and cut their stems at the same length depending on your vase
Now the fun part...
The Procedure
Knudson also helped to reduce root rot, which help in extending the life of flowers
eg. Puerto Rico was having problems with roots rotting in their vanilla crop, so they asked for help. Knudson successfully created a compound that resisted root rot- saving the vanilla crop!
7. Put nothing into the 4th vase
9. Put a single, freshly cut rose in each of the 4 vases
10. Repeat steps 3-8 two more times
11. Then observe the roses, and track how many days it take for each rose to show signs of wilting. Check all of the roses at the same time each day (6:30 pm) and take pictures of each of the groups of flowers ( Aspirin, sugar, vinegar, water) to compare later on.
12. Looking over your observations, pictures, and data, record how long it took for each
flower to show signs of wilting. Then, calculate on average how may days it took the flowers to show signs of wilting with the Aspirin, sugar, vinegar, and water
12. Finally, based on the average number of days, determine which flower took the longest to show signs of wilting
This experiment provides alternatives to expensive food/chemical preservative that can be hard to find!
You (finally) learn what methods will keep your flower looking healthy the longest
You also have a self,
I told me so
, moment when you figure out which preservatives were
meant to keep your bouquet fresh
People will feel more encouraged to buy flowers knowing they can use common household items to keep cut flowers fresh
This experiment might inspire others to conduct similar procedures with plants and fruit
My project is, "The Effect of Different Methods of Flower Preservation on How Many Days it Takes for a Flower to Show Signs of Wilting," a.k.a Flower Power. Basically, I will be testing so called ,"flower preservers," to see which ones actually work and keep the flower looking freshest the longest. To do this, I will place some sugar, vinegar, and aspirin in a vase filled with some water. I will also have a vase filled with just water for my control. I will then place a rose in each of the vases and will observe how many days it takes for the flowers to show signs of wilting, Then, when they have all wilted, I will look over my observations, record my results, and bad-a bing bad-a boom- the secret to flower freshness will be reveled.
The Results:
And finally, my bibliography:
Thanks for watching!
Summary of Results:
Cut roses last longer in a sugar-water solution because the roses in the vinegary-water solution only lasted 2 days till they showed signs of wilting, while the roses in the sugar-water solution lasted an average of 3.33 days.
The cut roses in only water, and the cut roses in the aspirin-water solution are the next best thing, beside the sugar water solution, because only water and the aspirin-water solution lasted for 3 days, while the flowers in the sugar-water solution lasted 3.33 days and the flowers in the vinegar-water solution lasted 2 days. Therefore, the data shows that if you can't use a sugar -water solution for your flowers, then only water or the water-aspirin solution would be good flower preservers.
Finally, vinegar does not help roses last longer because the roses in the vinegar-water solution had only lasted 2 days. However, compared to the sugar-water solution's average of 3.33 days, the vinegar water solution does not help preserve cut roses.

The effect of using different methods of flower preserver on how many days it takes for a rose to show signs of wilting is that when using a sugar-water solution, your rose will last the longest.
My hypothesis was, "If I use aspirin, sugar, vinegar, or water as a flower preserver, the vinegar will cause the roses to take the longest to show signs of wilting. This hypothesis was not supported by my experiment. I know this because the vinegar had the lowest average of 2 days out of all the flowers, while aspirin and water tied for 2nd place with 3 days, and sugar won with a total of 3.33 days on average.
I think the vinegar had the lowest number f days because, although it can help when used in a small amounts f plants, vinegar can also damage the flower if it is exposed to too much of it. Perhaps if the vinegar was used in a smaller dosage on each flower, they might have lasted longer.
Some errors could ave been made while I was doing this experiment as well, such as not measuring correctly, as well as not mixing the aspirin and sugar completely. Also, what I considered a "wilted" flower cannot be measured precisely.
The results of my experiment did not agree with my background information that using vinegar would help to keep a flower fresh the longest. However, the data in my experiment did support that by using things other than water, such as sugar, will increase the number of days it takes for your flower to show signs of wilting.
By doing this investigation, I have learned that using sugar as a flower preserver has better results than using just plain water. If I buy or receive flowers from someone, I know that by putting them in a sugar-water solution, they will last longer. Also, I have learned that vinegar was never intended to be a flower preserver.
If I could do this study again, I would probably try out more flower preservers/increase the level of I.V.s. After doing this experiment, I am curious as to which other so called "flower preservers", actually work, and which ones do not. I might also try decreasing the amount of vinegar used on the roses to see if that would affect how long it took for them to show signs of wilting.
One problem that I encountered during this experiment was judging when a rose was wilted. Sincere there was really no set amount on how much wilting was too much. I had to go back and look at my pictures a lot and compare them to how the other roses regressed. Without the pictures, the number of days until the roses were wilted would've been very difficult to measure.
While doing the experiment, I suspect I made errors such as not measuring correctly or not mixing in the aspirin and sugar completely. Also, what I considered a wilted flower cannot be measured precisely. so the data wasn't exactly exact.
Throughout the experiment, I wondered: "why did the vinegar cause the flowers to lose their color?" "What other flower preservers could have been used in this experiment?" and "How long do roses usually last after being cut?"
Also, while I was doing this experiment, I was curious as to what other experiments my investigation might lead to. For instance, "What is the effect of different methods of flower preservation on how long an orange, lemon, and apple stay fresh?" or "What is the effects of different amounts of sugar on how many days it takes for a flower to show signs of wilting"
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