Plants to scare off rock dassies?

You can try getting a hunting dog, or best try attract the dassies natural predators. I doubt aloes will work as they are too slow growing and will probably be eaten anyway. Maybe try calling The Karoo national botanical garden in Worcester and see if they have any ideas.
Otherwise i found this list online for rabbits.
There’s another approach to dealing with the rabbit problem: use plants that rabbits don’t like to eat (yes, I know, this will sound rather incredible to some people). Here’s a list of 30 rabbit-resistant plants for a wildflower garden:

1) Milkweeds (Asclepias sp.), all species. The leaves are bitter tasting and poisonous.

2) Dogbanes (Apocynum sp.), all species. The leaves are bitter tasting and poisonous.

3) Lobelias (Lobelia sp.), all species. The leaves are poisonous.

4) Delphiniums (Delphinium sp.), all species. The leaves are poisonous.

5) Ragworts (Senecio sp.), especially Senecio plattensis. The leaves are poisonous.

6) St. John’s Wort (Hypericum sp.), most species. The leaves produce a photosensitive reaction when eaten.

7) Native Thistles (Cirsium sp.). The leaves are too spiny.

8) Ironweed (Vernonia sp.) The leaves are too bitter, also the plants grow tall and out of reach of rabbits.

9) Vervains (Verbena sp.) The leaves are too bitter.

10) Native Wild Lettuce (Latuca sp. & Prenanthes sp.) The leaves are too bitter, particularly when mature.

11) Silphium sp. (Rosin Weed, Prairie Dock) The leaves are too sandpapery and coarse.

12) Rattlesnake Master (Eryngium yuccifolium) The leaves are too spiny and coarse, although rabbits may nip off the tips of leaves of young plants.

13) Wild Quinine (Parthenium integrifolium) The leaves are too bitter tasting and coarse.

14) Native Spurges (Euphorbia sp., such as Euphorbia corollata) The white latex is poisonous and highly irritating.

15) Many members of the Mint family, including Bergamots (Monarda sp.), Mountain Mints (Pycnanthemum sp.), native Hyssops (Agastache sp.), Wood Mints (Blephilia sp.), native Sages (Salvia sp.), and the like. Rabbits seems to detest the minty/oregano/anise scent of the leaves in these species. Generally, the more fragrant or bitter the leaves, the better.

16) Wild Indigos (Baptisia sp.) The leaves are poisonous.

17) Goat’s Rue (Tephrosia sp.) The leaves and roots are poisonous.

18) Anemones, Thimbleweeds (Anemone sp.) The leaves contain a blistering agent.

19) Buttercups (Ranunculus sp.), many species. The leaves contain a blistering agent.

20) Native onions (Allium sp.) Rabbits seem to detest the onion scent.

21) White Snakeroot (Eupatorium rugosum) The leaves are poisonous.

22) Water Hemlock (Cicuta maculata) The leaves, and especially the roots, are very poisonous.

23) Cowbane (Oxypolis rigidior) The leaves are poisonous.

24) Wild Sages (Artemisia sp., like Artemesia ludoviciana) The leaves are too bitter and their scent is repellent.

25) Ground Cherries (Physalis sp.) The leaves contain solanum, the same poison to be found in the leaves of tomato and potato plants.

26) Sneezeweeds (Helenium sp.) The leaves are bitter and poisonous.

27) Prickly Pear (Opuntia sp.) There are too many spines, at least for the Eastern Cottontail rabbit.

28) Lupines (Lupinus sp.) The leaves are poisonous.

29 Blue Star (Amsonia sp.) The leaves are bitter and poisonous (it’s related to the Dogbanes and Milkweeds).

30) Blue Flag Iris (Iris versicolor, Iris virginica)
The leaves are slightly poisonous and rather coarse. The roots are also poisonous.

Sometimes rabbits will bite off the leaves and stems of some of these plants experimentally, but will decide that they are unpalatable, and leave them lying on the ground. Mature plants are less likely to be attacked in this manner.

You can also raise tall-growing plants (Sunflowers, Joe Pye Weeds, Mallows, Goldenrods, Ironweeds, etc.), which are vulnerable to rabbits primarily during the first year (at which time they can be protected with hot pepper spray, tabasco sauce, black pepper sprinkled on leaves that have been misted, etc.), but later are too tall and coarse to be bothered much by them.
Hope that helps cheers
Jamie Garner

I thought more cheeky …

I like the idea of attracting natural predators, such as birds of prey. not sure how you would go about this though, perhaps creating places for them to roost?

Maybe I’m wrong but isnt the whole idea of a nature reserve to have the bush as your garden and the dassies to be welcomed?