I have not heard of Sweet Spot roses so I can't comment but I'm interested in finding out about them.

They are Hulthemia persica hybrids bred by Interplant in the Netherlands and look similar to the Eyeconic series from rose hybridizer Jim Sproul.

Here is a link that might be useful: rose hybridizer Jim Sproul

Some info on Rosa Persica.

Here is a link that might be useful: Rosa Persica on Wiki

Lots of folks jumping on the Hulthemia persica band wagon.

I'm really "taken" with 'Eyes For You,' (from Peter James, UK). The bloom purples as it ages, and it looks like it will be happy in my conditions.

Nice photo of EYES FOR YOU, Jeri. I like how it shows the color variations from bud to mature flower.

I have had Jim Sproul's Eyeconic Pink Lemonade for 3 years now and I love it. It has great rebloom and is very healthy for me. It's also remarkably winter hardy. Which was in question early on because of the Rosa Persica in it's background.

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I got Bulls Eye late last season and it never bloomed for me so I was a little surprised that it came back after that bad winter. It's planted in the ground now and putting on a lot of growth and has bloomed a couple of times. It's been healthy so far. Of the two I still like EPL the best because BE fades out to almost white really fast.

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Thanks for the replies everyone. I have a tropical garden blog if anyone is interested (shameless plug):

http://trinigarden.blogspot.com/