You and me both! Funnily enough though…..on my honeymoon, my wife and I went on Safari in Kenya, coupled with a week at Bamburi Beach near Mombasa.
There was an orphan animal sanctuary near our hotel there, and we had a pleasant day wandering about the pathways, being able to get close enough to pet the relatively tame animals there.
At one point however, my wife, an arachnophobia, refused to walk on the path as it passed under a giant cobweb in which to be fair, a very large spider (bigger than my hand anyway) sat. Instead she thought nothing of trampling through the very long grass (admittedly not as high as elephant grass) to the side of the path. Now, bear in mind that over that two week period we encountered a cobra over dinner at one of our lodges, and ran over and killed a black mamba in our minibus, you’d be more inclined to take your chances on the path me thinks! 🥴
Anyway, I just took a few pics assembling the grass.
Start by sticking down the Hairgrass with a hot glue gun. Do not be tempted to spread it out thinking you will get more coverage….this stuff I think works because you can get it to look dense as indeed it should be.

When done it should look like this. See the holes though, they look unsightly and unrealistic.

So take your chaingrass……stick a dollop of hot glue in the bottom of the hairgrass, and push it in.

Repeat until you’ve done them all, and see how much thicker the grass now looks. You have now hidden all the holes.

Don’t forget, you will need to disguise the bases around the perimeter of your grass patch as they too don’t look good. Use flocks, tufts, sponge foliage to suit your table as appropriate.

Edit:
Wow! Postman just handed me my copy of “Congo”…..and though I haven’t had time to read and digest it ( can’t do that until next week), a quick skim though reveals a well put together rule book, and a myriad of colourful eye candy pictures! I’ve already spotted half a dozen things I need to get myself…..I will have to stop reading it and get on with my painting….!