Hello: I have read that the flowerbulb production in Netherlands and Chile are all managed in a great 3-10 years crop-rotation cycle . I wonder which geophytes show the needs of crop rotation? and which are adaptive to the succession planting? The reason may be exterior such as 1. the biotic: micro organism or pests density. 2.abiotic: micro nutrient. (By Seeds or asexual reproduction are both considered.) Su-Hong-Ciao Taiwan