Overall, the plastic cups that come with your Smart Garden 3, Smart Garden 9, or Smart Garden 27 kit do not require replacing, as they are designed to be used over and over. Just clean them in-between plantings and they are ready for the next round.
However, should it happen that some of the cups are broken or missing, worry not - we have replacements available on our website!
These replacement cups are compatible with the Smart Garden 3, Smart Garden 9, and Smart Garden 27 models:
https://www.clickandgrow.com/products/smart-garden-plastic-cup