Domesticated crops are less hardy (in many senses of the term) because they have been bred too strongly in limited numbers of qualities. Weeds can survive better because they are not performing at their maximum at all times; the excess is security.
Say you have two plants, plant breed A has bred to have high seed production whereas plant breed B is wild. Both plants are injured, while they are in flower and have to allocate extra resources towards healing their injuries. Plant of breed B is able to divert some of its energy away from its flowers and all its other systems because it has a bit of excess to spare, and even though it produces less seed it still produces some. Plant of breed A has all of its energy going towards making flowers at the time it’s injured, and by diverting energy away from them it doesn’t have enough resources to support all its flowers and doesn’t make any seeds.
In the wild, breed B’s linneage would go on to outproduce all the plants in breed A for all the nutrients in the soil, but in captivity where larger seedheads are selected for the only plants that will continue to be planted by the gardener next year are those with the larger seedhead that were fortunant enough not to be injured. But this means that one event coming through, say a dog running through the garden, is enough to destroy the crop. Whereas the weeds capable of being plucked and cast off still reroot and grow to fruiting.
The model of morality to follow is that of a simple weed. Like water, weeds live in the places no one else wants, use the resources that remain untaken, and persist and subside.