Ent Vase That Doesn't Hold Water

I started a second Ent/Treant figure. This one is based on a digital painting by SirJarva on Deviantart. I realized there was no way I could get the leafy foliage the way I wanted it with clay, so it came out as a vase that doesn't hold water. I was thinking of using broccoli and then possibly changing it out for cauliflower at some point. I think rosemary might also work well.