Roses forum→Rose blooms smaller - thinner petals

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Aug 7, 2021 8:05 AM CST
I grow floribunda roses on a New York City terrace that gets sun all day.

I have a prolific bush that has pale orange blossoms. In the spring/early summer, the blossoms were big, with thick healthy petals, and they lasted on the bush for days. Recently, the blossoms are smaller, with delicate/thin petals, and they fade and die right away.

I was using Jack's Blossom Booster (10-30-20) twice a week, but about a month ago, I switched to Rosetone (4-3-2) once a month.

Any ideas how to get my healthy blossoms back?

Thumb of 2021-08-07/Terrace/75270d

Thumb of 2021-08-07/Terrace/bb9850

Zone 9, Sunset Zone 9 (Zone 9b)
Aug 7, 2021 8:35 AM CST
Those roses look healthy to me.

It is summer. It is hot. The flowers are getting more direct sun. Your summer blooms are not going to be the same as the first spring blush.
Name: John Wagner
Virginia Beach, VA (Zone 8a)
I plant, I water, God makes it grow
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Aug 7, 2021 10:30 AM CST
Welcome to the forum Terrace. I agree with Mustbnuts. The heat and humidity we've had this year has been stifling. Roses are going to naturally slow down and create smaller blooms to conserve moisture and energy. The first flush of blooms in the spring is always the most beautiful! The picture of your smaller bloom is still beautiful!
For God so loved the world that He gave His one and only Son, that whoever believes in Him shall not perish but have everlasting life... (John 3:16)
Name: aka Annie
WA-rural 8a to (Zone 7b)
Aug 16, 2021 11:17 PM CST
One thing to note is that the Bloom booster has lots more nutrients than Rosetone....basically you were pushing your rose to bloom. It might be fine, but it might not be good for the long term health of the rose.....there are people who say not to and some who say it is fine... ..I don't know. Maybe a potted rose needs more?

Maybe others know more.
Name: Mike Stewart
Lower Hudson Valley, New York (Zone 6b)
I was one of the first 300 contributors to the plant database! Photo Contest Winner 2020 Garden Photography Roses Bulbs Peonies
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Aug 17, 2021 7:00 PM CST
Sandsock makes the point that you essentially went from feeding your rose a highly potent synthetic fertilizer, to an organic, low-potency, slow release fertilizer. That alone could explain much of the difference. If you like analogies, it's the equivalent of a person consuming a packet of sugar, versus eating an apple.

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