What is the effect of adding white orchids to feng shui?

It doesn't matter. Planted on the outdoor balcony, it shows that your white orchid is sunny and belongs to the yang vein. And since there is a yang pulse, there should be a corresponding yin pulse to stop him. To tell the truth, being a rabbit makes no difference. If you want to keep the feng shui unchanged, you'd better plant another kind of flower in other places, such as indoors, so that the yin and the harmony will be balanced and the situation will not change. Just a suggestion. If you don't plant it, Feng Shui will be peaceful and there is no harm.