The ferns are about 8 feet tall and bending over under their own weight. (The brick is an aid to stability!).
This is what it looks like now. I leave a few inches of each stalk sticking up, so that I can see where the crowns are.
I have used Growmore in my garden for years and years. In fact I probably used it when I first started gardening, back in the 1980s, having learned about it from my Dad, who always used it too. Being a balanced fertiliser it is generally useful throughout the garden, for flowers, vegetables and fruit. You can get it in liquid form, but I always buy the granular one. The granular type is my favourite because you can apply it quickly and easily in whatever quantity you need, without having to dilute a measured volume of it in water or anything. The light-coloured granules are easy to see, so you can tell where you have applied it - which is not possible with the liquid one. I apply the Growmore by hand, and then work it into the soil with a hand-fork. At this time of year there is certainly no need to water it in!
Later - probably during the Christmas holiday, if the weather allows - I will add a good layer of home-made compost to the Asparagus bed. This will complete the preparations and then all I have to do is wait... (until April or May). If I feed the Asparagus now, it will feed me next year!