Some people may say that Growers is a brand of peanuts while showers refer to something that may be used in order to take a bath. Actually, these two terms are used to refer to the male sexual organ, the penis.
Someone who is said to be a grower means that the penis is usually small, but when the person is horny, the penis can grow to a decent size.
A shower means that the penis of the man is already large, so when the person is horny, it does not grow much anymore. There are some women who can actually get hurt when they have sex with men who have large penises.
The terms Growers and Showers relate to males penis size. A grower is one whose penis is small, but when it becomes erect, it grows to a larger size. A shower is one whose penis is already large and when erect, the size doesn't change much.
Studies show that factors such as genetics and a man's health, such as diabetes, erectile disfunction, and heart disease can determine if one is a grower or a shower. Another determining factor is the amount of collage in the man's penis tissue. Not much can be done to change between one or another.
A grower is invested in the business of cultivating the soil and producing flowers and vegetables and fruit. It is someone who harvests goods that come from the earth, which is not just edible items; it can also be textiles such as cotton. The grower can be someone who produces crops for themselves or commercially.
A shower can mean to give in abundance, or it may be a specific type of festivity in which individual gifts are lavishly given. It might be an event arranged for someone as a surprise. There is not too much of a connection between the two words except shower refers to someone lavishly pouring down blessings like rain which would help the grower.