Worldbuilding? Thinking about plants? Sometimes a plant can play an important role in a science fiction or fantasy novel. Remember the nightlock plant in The Hunger Games.
A feminist-fantasy stereotype is an herb that works exactly the way feminists wish birth control pills would work. To signal even more feminist virtue, it may be accompanied by an herbal version of the morning-after pill or RU-486— something that will do in an unborn child once its life has begun. There are of course no side effects, not even the normal depression that can come with the ending of a pregnancy in even the best circumstances.
Plants are a major food source, even for carnivores like me. And of course to get the eggs, cream and meat I need for my healthy low-carb diet, I have to feed chickens and sheep lots of good plants, such as stinging nettle. Stinging nettle may sting you when fresh, but if you cook stinging nettle plants they are like spinach. Only better tasting.
Dried stinging nettle plants are a good fodder for sheep, goats and other critters that eat grass and hay. My goats and some of my sheep are willing to eat any fresh stinging nettle I pick for them, but they ignore the stinging nettle plants growing in their pens unless I pluck it for them.
My chickens also eat fresh stinging nettle. Right now a big group of my chickens is in a non-movable pen with no access to fresh greens, so they get very excited when I bring them a fresh bunch of stinging nettle.
In my WIP Tiberius Base, plants are a major influence for the people in starships and star bases. Scientific studies show that people who have regular access to plant-rich environments are happier. And so it is customary to provide these plant rich environments.
A human-constructed forest is at the heart of all Terran-flagged starships. Ships’ crews brag about the size and intricacy of their ship’s forest. Star bases have even larger forests, and an actual space city usually has more than one.
Tiberius Base has a larger forest than any other constructed by Terrans so far. It contains a wide variety of trees and plants from both European and Asian environments. Mushrooms spores are well represented in the mix. And this leads to a problem.
Mushrooming is an amazingly popular activity among Terrans in space. The formal food-growing facilities on Terran ships and bases don’t traditionally grow mushrooms and so it is a highly sought-after food. Canned mushrooms are a staple in trading and many worlds without much interplanetary trade have a small facility in which to can mushrooms.
A forester is placed in charge of an artificial forest in a starship or base, but people hiking through the forest for recreation often come upon newly sprouted mushrooms before the forester is aware of them. People often have certain mushroom-rich areas of a forest that they look upon as their personal mushroom-hunting space. The problem arises when more than one person claims the same space.
Usually there are a few rules. Residents of a base or starship have a higher claim to a bit of the local forest than do transients or guests. Well-off people who have a garden area incorporated into their quarters must give way to the lower-income workers. But when 2 people of the same status claim the same mushroom ground, it can get difficult.
There was a famous case of murder over morel mushrooms on one of the older starbases. Since this base was owned by the Menders, an alien race, and Terrans were only using the base with permission, it was quite the scandal. It has since been established that murder over mushrooms, even morel mushrooms, is in no way considered justifiable homicide. It is also customary to grow some morel mushrooms in the cultivation rooms to render them less rare-and-hard-to-come-by.
Another way plants are important to star bases and starships is the provision of Schreber gardens. A Schreber garden is a custom which started in Germany. There are small garden plots provided to those who live in apartments or small houses with no gardening space.
In the spacegoing world, Schreber gardens are provided to anyone living on a space base who do not have a garden area as part of their living quarters. Gardening together with your Schreber garden neighbors is a popular pastime. Even in starships sometimes Schreber garden plots are provided to interested crew men, especially men who are drafted into the service.
Certain drug plants are forbidden crops on any space station or ship, as drug plants may be taboo in our world. Use of drugs for other than medical necessity is considered a sign of weakness, and drug users are likely to be identified and deprived of employment opportunities. However, the usual punishment for a convicted drug user is time spent in a locked-door rehab facility, so at least the convicted have a chance to shake their addictions.
Some plants may be mild spices for one species and deadly drugs for another. This creates conflict when the spice is a beloved one and the users of it don’t want to give it up to help aliens remain drug-free. Sesame seeds are a plant item of this class, but roasting the seeds denatures the drug effect.