In fact, you can also sow our bee meadow, butterfly meeting and Co. on the balcony or terrace in a large pot, balcony box or tub. Please keep in mind that the seeds are actually designed to be sown outdoors and may not grow as successfully as they would in a garden.
It's well worth the trial and error, however, and we've had success with it many, many times! Note that your flowers grow best in a sunny location. The seeds are very productive and should be spread out in wide cubes so that the individual plants have enough room to develop.
Don't be surprised if only bushy green grows for the first few weeks. This is completely natural, because it takes a while until the first flowers appear.