Did you know that I make bespoke grave wreaths? I use a heavier wreath base with long lasting oasis and cover with jute so it looks lovely and neat. Then I make an arrangement with the colours of your choice - so themed - for example, purple and yellow or pink and yellow as in the examples above but the colour choice is your own. 
These wreaths can be left out on a grave in all weathers and will last a long time. They're weighted to avoid them blowing away. 
 
Please message me on joliefleurwreaths@gmail.com to discuss your requirements. The lead time is approx 2 weeks to allow me to source the flower colours of your choice. The price is approx £75 - £80 depending on the blooms chosen.