Cut Flower Care: Why Keep Stems Wet?

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Discussion Overview

The discussion revolves around the care of cut flowers, specifically the practice of cutting stems underwater and the implications of keeping the stems wet. Participants explore the reasons behind these practices, including the effects of air exposure and water absorption on the longevity of cut flowers.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • Some participants suggest that cutting the stems underwater prevents the ends from drying out, which is crucial for maintaining the flowers' ability to draw water.
  • Others question why drying out the ends reduces water absorption, seeking clarification on the mechanics involved.
  • There is a discussion about whether the vase should contain water, with some asserting that it is necessary for the flowers' survival.
  • Some participants express skepticism about the necessity of cutting stems underwater, proposing that simply placing the flowers in water might suffice.
  • Concerns are raised about the formation of air embolisms when stems are cut in air, which could hinder water transport within the plant.
  • Participants mention that cutting stems underwater may help avoid air entering the stem, which could complicate water absorption.
  • One participant notes that the plant cells are still living and require water to prevent their demise.

Areas of Agreement / Disagreement

Participants express differing views on the necessity and effectiveness of cutting stems underwater versus simply placing them in water. There is no consensus on the best practice, and several competing ideas are presented.

Contextual Notes

Some participants' claims depend on assumptions about plant biology and water transport mechanisms, which remain unresolved in the discussion.

Raghav Gupta
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If you buy cut flowers, why might the florist recommend cutting the stems underwater and then transferring the flowers to a vase while the cut ends are still wet?

I think cut flowers are flowers cut from a plant.
If the stems are cut underwater stems would go. So why wetting if they are cut finally?
 
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If the ends of the cut flower dry then the ability for them to draw water is greatly reduced.
 
Greg Bernhardt said:
If the ends of the cut flower dry then the ability for them to draw water is greatly reduced.
Why the ability is reduced if they are dry and not in the case of wetness?
 
Should the vase have water?
 
Raghav Gupta said:
Why the ability is reduced if they are dry and not in the case of wetness?

The plant cells die if they dry out.

Raghav Gupta said:
Should the vase have water?

The vase should contain water, yes. Some shops include a little packet of fertilizer to help keep the flowers fresh.
 
Why can't we dip the stem in water. Why we should make a cut underwater?
 
Raghav Gupta said:
Why can't we dip the stem in water. Why we should make a cut underwater?
You reduce the exposure to air which dries out the stem. I trim flowers out of water though. Maybe it gives the flower a bit more time, but I doubt much.
 
But the vase is already having water.
If we keep directly the cut flower in it without cutting it underwater then what difference it makes?
When we will put flower in it. It would automatically become wet.
 
Raghav Gupta said:
But the vase is already having water.
If we keep directly the cut flower in it without cutting it underwater then what difference it makes?
When we will put flower in it. It would automatically become wet.
Sorry I don't know what this means
 
  • #10
I mean that we should not trim flower underwater first and then put in vase,
But
Directly put the flower in vase?
 
  • #11
Raghav Gupta said:
Directly put the flower in vase?
You'll want to trim the flowers after you buy them to help the water reach the healthy stem
 
  • #12
OK.Thanks Greg you have been always helpful to me.
 
  • #13
Greg Bernhardt said:
You reduce the exposure to air which dries out the stem. I trim flowers out of water though. Maybe it gives the flower a bit more time, but I doubt much.

Cutting the stems in air can create an embolism (a packet of air) in the stem that reduces absorption and water transport. When you cut it out of water, then put it in water, you stand a good chance of forcing air into the stem. That makes it hard for the plant to draw up water, and wherever the air bubbles are, no transport can occur in the plant.
 
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  • #14
Pythagorean said:
Cutting the stems in air can create an embolism (a packet of air) in the stem that reduces absorption and water transport. When you cut it out of water, then put it in water, you stand a good chance of forcing air into the stem. That makes it hard for the plant to draw up water, and wherever the air bubbles are, no transport can occur in the plant.
Pyth is correct, cutting stems under water is to prevent air from entering the stem.
 
  • #15
Raghav Gupta said:
Should the vase have water?

The plant cells of the flower are still living and respiring.
Lack of water in the vase will surely hasten their demise.
 

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