The correct answer to this question is Horticulturist. A Horticulturist studies all types of plants, like spices, fruits, vegetables, herbs, and nuts. Horticulturists also grow the plant's plants that are grown for the purposes of medicine and tea.
Horticulturists also study ornamental plants like bushes and flowers. They study ways to make them more beautiful and ways to make them grow easier.
To study all these types of plants, a person may experiment with various types of soils. This can help see the type of soils that are best for each plant and how the soil makes them healthier. Years are spent studying and developing flowers.
Most people would call this person a botanist or a horticulturist. There are some people who may have a hobby of taking care of plants. You would call people like these gardeners because they normally love to tend to their gardens without a lot of effort.
Someone who would be called a “plantsman” can be someone who is obsessed with anything that is related to plants. There are even some who would have a weird attitude about plants.
A horticulturist is someone who would grow plants not only because of his interest but also because he would like to sell them. Among the different types of people who like plants, how would you classify yourself?