Our Research Department at Weeks Roses, under the direction of Tom Carruth since 1988, is dedicated to bringing you the best in all types of new rose varieties--whether from our own hybridizing efforts or from the efforts of international breeding firms or amateur stateside breeders.

Each year at our research greenhouses in Upland California, we hand pollinate about 50,000 flowers to produce around 250,000 seeds. After a thorough 8 to 10 year evaluation period, culminating in the All-American Rose selections (AARS) trials, only about 3 or 4 varieties emerge from the group as truly superior and market-worthy.

Click on the link below to see how a rose is hybridized.