Answer:
a good with an elastic supply
Step-by-step explanation:
Elastic supply goods are often seen as luxury items, and a grass that stops its growth at a certain length can be considered as a luxury item, an elastic supply good is described as an item which supply varies with the market price at which is set, in this example you can see that the grass is expensive and people buy it a lot, but when other suppliers lower their cost the demand decreases, meaning that their consumers are actually in the higher-end spectrum.