Meanings of extra plants in English

Well, all these suckers and extra plants that are swampin' the ground are just as bad as weeds.

When the thinning was done, they must begin all over again, working with the short-handled hoes, cutting out any extra plants, loosening the ground.

There are the people who every year propagate dozens (or often hundreds) of extra plants to support their favourite charity or local garden society.

On closer inspection, the Armstrongs now only have to plant 10,000 extra plants, but still have to re-do kilometres stock exclusion fencing to accommodate them.

"Actually, I had two extra plants, and I was going to ask you if you wanted them."