One of my raised beds needs topped up

[mark smyth]

One of my raised beds has started to sink and needs topped up. The options are buy in top soil or buy in gritty sand

It will be a big job because of the number of bulbs I have in the bed. I may just lift the snowdrops and let all other bulbs fend for themselves. Just now I don't know what to do about the perennials

Any opinions?

[johngennard]

I regularly top up raised beds containing bulbs  and perennials plus daphne etc. and I have never found the need to lift anything.My experience is that all bulbs adjust to the depth of soil that they find themselves in.Always assuming of course that your beds haven't sunk to mammoth proportions.