Will the plum Santa Rosa polinate with the plumcot?

Yes, the Santa Rosa plum can pollinate with a plumcot, as both belong to the same genus, Prunus. Plumcots, being hybrids of plums and apricots, can benefit from the pollen of compatible plum varieties like Santa Rosa. However, successful fruit set may depend on the specific varieties and their blooming times aligning. It's always best to check for compatibility and local conditions for optimal fruit production.