https://www.rhs.org.uk/plants/165525/helianthus-annuus-yellow-disc/details
Find help & information on Helianthus annuus 'Yellow Disc' from the RHS
helianthus annuusyellowdiscrhs
https://www.rhs.org.uk/plants/215756/helianthus-annuus-pha320-pbr/details
Find help & information on Helianthus annuus 'Pha320'PBR from the RHS
helianthus annuuspbrrhs
https://www.rhs.org.uk/plants/362843/helianthus-annuus-u09rfsulm-pbr/details
Find help & information on Helianthus annuus 'U09rfsulm'PBR from the RHS
helianthus annuuspbrrhs