Zoysia Grass has been traditionally grown from vegetative or hybrid (no seed) varieties. Now that the seeded versions of Zoysia Grass are available people are planting these quality seeded Zoysia varieties in droves.oysia Grass has been traditionally grown from vegetative or hybrid (no seed) varieties. Now that the seeded versions of Zoysia Grass are available people are planting these quality seeded Zoysia varieties in droves.
Yes cats can and will mate with siblings-they don't make choices about their reproduction like humans do, there's only hormones and instinct. Any kittens produced from a brother/sister pairing will be at greatly elevated risk for genetic deformities and diseases. Get the cats fixed and avoid the problem altogether.
If you have multiple cats, neutering just one may not change dominant behavior -- you have to go all-in. A single unfixed cat, male or female, can influence the behavior of every other cat in the mix. Even a neutered cat may try to mount a female or demonstrate dominance over a non-neutered male.