Nurseries here in our region largely procure from Goldsmith seeds and Cora series is sure winner here, the plants last more than a year (behaving like biennial). I have seen the disease in Vincas but it is RARE and doesn't spread to the other plants nearby.

Pacifica series has much round blooms on large plants, but the seeds are expensive, Titan series was introduced last year but the colors available and the bloom size were similar to the local perennial vincas, thus it was not well received.

Previously they were growing "Little series" which was more prone to the diseases.

They all were planted under open sun so shade tolerance was not observed.

I'll be opting for the Pacifica series this year.

Here is my Cora cascade pink blush from last year summer season, it bloomed beautifully for three months till we moved from that place:
{{gwi:1038}}

Vincas are great! I haven't tried the Cora series, but the Coolers perform superbly for me as has the Heat Wave series. Pacifica series was "eh" for me; the above two series were much more vigorous in my experience. I'm sure that, as with any other plant/plant series, results vary based on zone, region, and growing conditions.

"Now they claim that gene has been bred in all Coras. Hmmm. Not based on my tests."
Sorry, but I KNOW they have bred this gene into this entire line. I would suggest contacting Goldsmith (now owned by Syngenta) directly, and letting them know of your experience.

Here is a link that might be useful: Goldsmith

Another thing to consider with the Coras. They were bred specifically to be resistant to Aerial Phytophtohoa. Please note that "resistant" doesn't mean completely immune, and there are plenty of other diseases that can wipe out vinca.

Izhar and MXF3, Thanks for the reply. I am doing a trial this year for apricots Vinca. So far the trial will include Cora, Cobra, Viper and Vitesse. I will do more research on Cooler, Heatwave and Pacifica and add two of does.
Goblugal, I just spoke with a technical rep from Goldsmith. I am very happy with the conversation. My suggestion is that you do the same; ask him about Florida.
Bob

Bob - I know all of the technical reps at Goldsmith quite well, thank you. I just took exception to your broad generalizations about Cora and implying that Goldsmith has lied about the disease resistance.

Goblugal, Pick out a rep with experience in Florida and talk to him or her about Aerial Phytophtohoas. Hope you get a rep as brilliant and candid as I spoke with.

Just out of curiosity did anyone tried to made a cross between the local disease resistant ones and these varieties or any article on this??

Izhar, several years ago I bought an 18 pac of vincas at Walmart. Shortly after I planted the vincas all but two were killed by aerial phytophtohoas. The remaining two lived and grew huge. They lived for 2 years until I pulled them up to make room in a bed which they dominated. I thoroughly examined each plant and neither showed any sign of disease.
I did wonder in recent years if I would have contacted seed developers if they would have been interested in these two plants. I will be attending several national plant trials this year and will attempt to find that answer.
Also in my readings about histories of plants, I remember reading that plant developers often brought back seed or plant material from local varieties to try to capture their best characteristics. Of course there is always the possibility that a plant exists with unique characteristics that they have not seen or tested. Sure would like to know how they would react if you (or anyone) contacted them and said you have local vincas that are highly disease resistant.
Thanks,
Bob