what are some flowering houseplants you should grow?. in . during national indoor plant week and throughout the month of september, look for indoor houseplants such as peace lilies, ferns, palms and spider plants . kalanchoe plant, this is the plant i think would be pretty in the terrariums with maybe other succulents they are pretty inexpensive. always name your houseplants i\u0027m pretty one hundred on the fact that helps. full size of decorative house plants red soil planters air purifying indoor plants beige concrete flooring. spathiphyllum .