If you find that you want to pass on the plants, why not look for art that's got some whimsy to it?
Kidomaru (Aladdin Sane) Ukiyo-e
Can We Shall
The Dearborn Family…
Or for science buffs, there are plenty of diagram-inspired wall art ideas.
New York State Flower
The Very, Very Many Varieties of Beer
Women in Science: Marie Curie
Once you've picked your prints, don't be afraid to display them together! Group similar images, colors, and frames and arrange them in groups on the wall. This is called salon-style and it will give your home an eclectic feel.
And while frames are preferred by many, you can get creative using colorful washi tape to display the work.
But remember: it's your space and you can decorate it however you want. Not hanging a framed print can look chic, too!