Is there a way to dynamically alter the scale of terrain objects e.g grass, trees, foliage etc?

So these would be objects that are painted on the terrain via the terrain editor. Would there be a way to dynamically change, for example, the height of the grass?

Currently, you can attach a script to a terrain and use that to dynamically alter the object density, but what if you wanted to keep the density of the object the same but change their maximum size? I’m open to asset suggestions if there’s no inbuilt way.