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Other applications of rooting hormone?

I asked these question on a propagation forum but wanted see if anyone here had additional information.

I've dipped cuttings in rooting hormone then placed it in soil to root. I was wondering if you can use rooting hormone in other ways:

1. Will rooting hormone added to water accelerate rooting of cuttings? (assuming the plant roots in water, i.e. coleus)

2. Can you sprinkle rooting hormone on a crawling plant's stem that is in contact with soil to accelerate it's rooting? (assuming the plant roots when in contact with soil, i.e. mint, creeping jenny, some succulents)?

3. Are these applications not a good idea or bad for the cuttings?

Thanks in advance for your help.


( 3 comments — Leave a comment )
Feb. 9th, 2006 04:32 am (UTC)
1. Rooting hormones are typically auxins. What will most likely happen is that the root growth will be encouraged but the shoot and leaf growth may be stunted.

2. It would most likely work but if you are using plants that root that easily anyways it would be a waste to use the hormone.

3. They aren't bad for cutting but I wouldn't suggest either application unless you use #1 to help a plant with a lot of shoots/leaves but few roots get established.
Feb. 9th, 2006 10:39 am (UTC)
1. Yes, it works brilliantly. I've used it to speed up root production in busy lizzie cuttings. They develop luxuriant roots very quickly and once you plant them up they take off much quicker than if you've done it without.

2. Haven't tried it but what have you got to lose?

3. I haven't observed any negative effects. I use rooting hormone for lots of stuff because the results are so much more reliable.
Feb. 10th, 2006 06:48 am (UTC)
1. Results from the use of rooting hormones vary from one species to another. My experience is it doesn't have much of an effect on some plants, but others root faster with it.

2. Take a razor blade and make a fine cut in the stem. Many plants will strike root adjacent to the scar tissue that forms near the cut. You can always apply some rooting hormone to the cut. I'm inclined to think it will help. I've done the same thing with stem cuttings of some plants that are difficult or slow to strike root. Applying rooting hormone to the cuts seems to help.

3. See #1
( 3 comments — Leave a comment )


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