From looking at other websites they use quite light colours. Also mainly pink/purple colours, possibly to aim at a female audience, because women are more likely to be interested in flower photography.
In my website i will use these type of colours, shown on the colour scheme chart: they are quite light/neutral colours, but also quite appealing.

'Website Colour scheme chooser' - this is so that I can work out a colour scheme for my website.
Its a Html colour combination chooser





These colours are my favourite. There is a mixture of neutral and bright colours, which balances it out. Pink is very girly and would work well with the target audience. The green also fits with gardens and flowers.