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Apr 7, 2018 4:32 PM CST
Name: Alice
St. Johns, FL (Zone 9a)
Birds Enjoys or suffers hot summers Ponds Organic Gardener Orchids Master Gardener: Florida
Hummingbirder Hibiscus Fruit Growers Region: Florida Dog Lover Container Gardener
About 10 years ago I grew quite a few H. Rosa sinensis, I was even trialing them for a hybridizer. At that time the growers felt that, unlike other flowering plants, excess phosphorous was detrimental to good growth and flowering in tropical hibiscus. Yesterday I picked up a beautiful Tradewinds 'Mandarin Wind' and the tag with it said to fertilize with 5-10-5. Have the recommendations about phosphorous changed? What are you all feeding yours?
Thanks, alice
Minds are like parachutes; they work better when they are open.
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Apr 16, 2018 7:46 PM CST
Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
Celebrating Gardening: 2015 Plant Identifier Tip Photographer Garden Sages Garden Ideas: Master Level Hibiscus
Yes, phosphorus should be low for H. rosa-sinensis. According to Hidden Valley Hibiscus, you should have medium Nitrogen, low phosphorus, and high potassium. The fertilizer they sell is 17-5-24, so anything with a similar ration would be best. Personally, I have had pretty good success with Miracle Grow.
wildflowersoftexas.com



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Apr 17, 2018 3:49 AM CST
Name: Alice
St. Johns, FL (Zone 9a)
Birds Enjoys or suffers hot summers Ponds Organic Gardener Orchids Master Gardener: Florida
Hummingbirder Hibiscus Fruit Growers Region: Florida Dog Lover Container Gardener
Thanks Horntoad, that is what I remembered. We have an excess of phosphorus in our soils and water here, I didn't want to add to the problem.
Minds are like parachutes; they work better when they are open.
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Jul 11, 2018 8:32 AM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
I am testing out miracle gro potting mix on two small tropical hibiscus I purchased online. Most websites i read say it can be used on them. I'll update in a few weeks to see how well it works.
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Jul 13, 2018 11:36 AM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
Been 2 days so far a few leaves are yellowing on one and lost a bud not sure if it is because of potting mix, or it became too hot because they have to be slowly introduced to sunlight. Also maybe still stressed from the mail.
Last edited by Miamiu Jul 13, 2018 11:37 AM Icon for preview
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Jul 13, 2018 11:40 AM CST
Name: Karen
New Mexico (Zone 8a)
Region: New Mexico Region: Arizona Region: Ukraine Cactus and Succulents Plant Identifier Plays in the sandbox
Greenhouse Bromeliad Adeniums Morning Glories Avid Green Pages Reviewer Brugmansias
It could just be the transplant shock right now. I've frequently had buds drop after re-potting. I'm not too fond of miracle gro potting mix. It seems over priced, and to me it under performs. Make sure you don't have the one with the water holding crystals added.
Can you show us photos of the plants you are worrying about?
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Jul 13, 2018 12:43 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
Not quite worried yet few yellow leaves coming o n though. Only had them out of the mail 3 days. Did not realize first pic is blurry.
Thumb of 2018-07-13/Miamiu/34ebdc
The other one is looking normal.

Thumb of 2018-07-13/Miamiu/e299bb
Last edited by Miamiu Jul 13, 2018 12:46 PM Icon for preview
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Jul 13, 2018 12:53 PM CST
Name: Karen
New Mexico (Zone 8a)
Region: New Mexico Region: Arizona Region: Ukraine Cactus and Succulents Plant Identifier Plays in the sandbox
Greenhouse Bromeliad Adeniums Morning Glories Avid Green Pages Reviewer Brugmansias
Eric, for some reason I can't see either of the photos. Can you try again?
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Jul 13, 2018 2:16 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
Are they blurry, or you just can not see them? I am using a fire tablet.
Thumb of 2018-07-13/Miamiu/ceae1a




Thumb of 2018-07-13/Miamiu/dced79
Last edited by Miamiu Jul 13, 2018 2:19 PM Icon for preview
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Jul 13, 2018 2:19 PM CST
Name: Karen
New Mexico (Zone 8a)
Region: New Mexico Region: Arizona Region: Ukraine Cactus and Succulents Plant Identifier Plays in the sandbox
Greenhouse Bromeliad Adeniums Morning Glories Avid Green Pages Reviewer Brugmansias
Ok, they weren't there at all, but they are now. The first pic is quite blurry but the second one is better. Since you haven't had them long, I'm thinking they look fine. Make sure they have good light and enough water and they should do fine.
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Jul 13, 2018 2:21 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
It's always an adjustment process with the new because you have to slowly get them used to sunlight. Also I don't want to over water them.
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Jul 13, 2018 2:22 PM CST
Name: Cheryl
North of Houston TX (Zone 9a)
Region: Texas Greenhouse Plant Identifier Plant Lover: Loves 'em all! Plumerias Ponds
Foliage Fan Enjoys or suffers hot summers Tropicals Garden Ideas: Master Level Garden Sages Million Pollinator Garden Challenge
I am not a fan of Miracle Grow products. They are partnered with Scotts who is partnered with Monsanto.

Also ever try to find things like NPK numbers or ingredients on Miracle Gro products? You can't. It's a secret.

I buy 40-60 bags of Miracle Gro Garden Soil every year when it goes on sale. By fall it's gone, used in my gardens here and there. When this batch is gone, it will be gone from my yard forever.
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Jul 21, 2018 12:30 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
So it's been a week. Plants really have not grown much. I had four buds on one when it shipped and they all went bad. Maybe due to miracle gro used for soil.
Last edited by Miamiu Jul 21, 2018 12:31 PM Icon for preview
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Jul 21, 2018 12:36 PM CST
Name: Karen
New Mexico (Zone 8a)
Region: New Mexico Region: Arizona Region: Ukraine Cactus and Succulents Plant Identifier Plays in the sandbox
Greenhouse Bromeliad Adeniums Morning Glories Avid Green Pages Reviewer Brugmansias
It could still be transplant shock. I have my new hardy hibiscus in the ground. It's got some yellow and dropping leaves. The others turned purple. The one bud is still hanging on, but seems shrunken, so I expect it to drop soon.
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Jul 21, 2018 1:24 PM CST
Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
Celebrating Gardening: 2015 Plant Identifier Tip Photographer Garden Sages Garden Ideas: Master Level Hibiscus
I agree with Karen, it's more likely due to transplant shock. I've had plenty lose buds after transplanting. Never had an issue with Miracle Gro.
wildflowersoftexas.com



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Jul 21, 2018 1:58 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
plantmanager said:It could still be transplant shock. I have my new hardy hibiscus in the ground. It's got some yellow and dropping leaves. The others turned purple. The one bud is still hanging on, but seems shrunken, so I expect it to drop soon.


I am not sure you have to do this with the hardy, but when you buy his tropical he says to slowly introduce them to sunlight.
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Jul 21, 2018 2:01 PM CST
Name: Karen
New Mexico (Zone 8a)
Region: New Mexico Region: Arizona Region: Ukraine Cactus and Succulents Plant Identifier Plays in the sandbox
Greenhouse Bromeliad Adeniums Morning Glories Avid Green Pages Reviewer Brugmansias
I would do that with a tropical one, but didn't do it with the hardy one I got. I put it directly into the sunny spot and only shaded it with a chair the first day. I imagine that's why the leaves turned purple so quickly.
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Jul 31, 2018 5:44 PM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
So both plants have buds now. I am also using hibisgain on my other ones. So far have not seen much flowering after two sessions of fertilizer the past two months with hibisgain. I'm fertilizing every 3 weeks.
Last edited by Miamiu Jul 31, 2018 5:45 PM Icon for preview
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Jul 31, 2018 6:18 PM CST
Name: Jay
Nederland, Texas (Zone 9a)
Region: Texas Region: Gulf Coast Charter ATP Member I helped beta test the first seed swap I helped plan and beta test the plant database. I was one of the first 300 contributors to the plant database!
Celebrating Gardening: 2015 Plant Identifier Tip Photographer Garden Sages Garden Ideas: Master Level Hibiscus
Miamiu said:So both plants have buds now. I am also using hibisgain on my other ones. So far have not seen much flowering after two sessions of fertilizer the past two months with hibisgain. I'm fertilizing every 3 weeks.




Palmgain by the same manufacturer has an NPK ration closer to what tropicals like. Also contains Magnesium, Iron, which is important to topicals.
wildflowersoftexas.com



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Aug 1, 2018 8:01 AM CST
Name: Eric
Hawthorne, fl (Zone 9a)
Bee Lover Butterflies
Would it be better to fertilize every two weeks rather than every three?

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