Most lawn substitutes fail because they are sold like a style choice and planted like a compromise. Then the first summer arrives, the dog cuts the corner, the wheelbarrow takes the same track to the compost heap, and the “carpet” starts looking like a crime scene.
Dymondia margaretae gets overpromised more than the others because it looks so tidy in photos. It makes a low silver-green mat, handles drought, and can take light frost. Put it in the right spot, with sharp drainage and only occasional foot traffic, and it earns its keep. Put it where children run, dogs pivot hard, or a builder rolls a barrow every Saturday, and you are asking a decorative groundcover to behave like kikuyu. It will not.
Where Dymondia works
Dymondia margaretae is at its best in sunny courtyards, between stepping stones, and along edges that are crossed occasionally rather than used as a route. It likes a lean, fast-draining site. A patch in a Cape suburb with cold nights and dry winters can be a better bet than a soggy inland hollow where water hangs around after rain.
The plant’s appeal is obvious when you see it settled. The leaves knit into a neat mat, the colour sits between silver and green, and the whole thing reads as ordered without looking formal. In a small urban garden, this softens a hard surface without demanding constant mowing, edging, or attention.
The catch is traffic. Dymondia handles light pedestrian use, meaning the odd step, not repeated pressure. Once the same line gets used every day, the mat opens up and stops being the easy substitute people imagined. The damage is worse when the route is wet because compacted soil and persistent moisture do more harm together than either one does alone.
Where it does not
Do not plant Dymondia where the family actually moves. If the shortest route from the gate to the washing line cuts straight across the lawn, that is a path, not a planting bed. If the dog always turns there, that is a path. If the wheelbarrow follows the same strip to the veggie patch, that is a path too.
The same warning applies in places with heavy rain or poor drainage. Dymondia does not like sitting wet. Overwatering can leave large ugly dead patches that read as failure. In a high-rainfall garden, or anywhere the soil stays cold and damp, the plant is much less forgiving than its neat appearance suggests.
It should never be sold as a direct kikuyu replacement. Kikuyu is a turf grass built for abuse. Dymondia is a groundcover built for restraint. These are different jobs, and confusing them leads people to spend money twice.
Falkia and Crassula are different answers
Falkia repens is the plant for someone who wants a quicker cover and can give it moderate water. It spreads more readily than Dymondia and is more comfortable in either sun or shade, which makes it useful in mixed gardens where the light changes through the day. It can make a lush carpet, but it still has limits. Constant pressure, especially in wet ground, will wear it down.
Crassula multicava is in a different mood again. It is happiest in sheltered shade, where frost is less brutal and the garden gets a softer kind of light. It can do well under trees and in protected corners, but it is a poor choice for exposed sites with hard frost. It also belongs in places where people are not stomping through on a daily basis.
These three plants get lumped together as if they were interchangeable. They are not. Dymondia wants sun and discipline. Falkia gives faster coverage and tolerates a wider light range. Crassula multicava prefers shelter and shade. If you buy them as a generic answer to “I want no grass,” you are setting yourself up for disappointment.
Map the traffic first
The clever move is not choosing the prettiest groundcover first. It is mapping the way people already use the garden.
Walk the site and look for the real routes: Gate to front door. Back door to washing line. Patio to braai. Kitchen to compost. Jojo tank to tap. Pool gate to the side passage. Those tracks matter more than the open patches where nobody steps unless they are looking at the roses.
Keep the hard surface where the feet are. Concrete, paving, gravel, sleepers, whatever suits the garden. Then use groundcover where people mostly look, not where they walk. That usually means borders, islands, the spaces between stepping stones, and the edges of beds that frame a view without carrying it.
A garden with honest circulation is easier to maintain than one built on wishful thinking. You do not need to fight the way people move. You need to design around it.
Planting depth and spacing
Dymondia, Falkia, and Crassula all establish faster when they are planted properly from the start. Do not crowd them so tightly that the roots compete before the plants have settled, but do not leave such wide gaps that weeds move in and make themselves at home.
For Dymondia, small plugs or divisions set roughly 20 to 30 cm apart will knit together into a usable mat if conditions suit it. In a dry, sunny bed with good irrigation while it establishes, expect the gaps to close over a season or two, not in a weekend. Falkia can be spaced a little wider if you want a faster spread, while Crassula multicava can also be planted to allow room for its own expansion in shaded pockets.
The point is not instant cover. The point is a planting scheme that fits the plant’s pace. Too much space and the weeds win. Too little and the patch spends its first year fighting itself.
Watering without wrecking it
Establishment water should be regular enough to help roots move down, then eased off once the plants are anchored. Dymondia in particular hates the soft, constant soak that some gardeners give everything new. It prefers moisture during establishment, then a drier rhythm once it has settled.
In wet or heavy soil, the temptation is to water more because the surface looks dry. That is how people create dieback patches and then blame the plant. If the soil stays damp after rain, the answer is drainage, not more irrigation.
Falkia will take a bit more water than Dymondia, especially if you want that fuller look. Crassula multicava can be kept more lightly watered once it is established, particularly in shade. None of them want to be treated like thirsty turf.
What to do this weekend
Take photos of the worn tracks across your current lawn before you decide what to replace.
Stand at the gate, the washing line, and the patio, and photograph the lines people actually use. Then ask one blunt question: Which parts of this garden are for walking, and which parts are only for looking at?
If the same strip gets used every day, keep it hard. If a patch is mostly visual, that is where Dymondia margaretae, Falkia repens, or Crassula multicava can earn space. The plant choice comes after the traffic map, not before it.