Try a unique number at front of description and mix up words

eg

A1234 jacaranda tree (yellow) seeds (10)

B4567 yellow jacaranda tree plant 

also

make then different durations and different prices and use different photos (call them "yjtseeds" and "yjtplant" on your computer so they are different when uploaded.

I think the robots check the first nine letters so you must aim to ensure the robots cannot say they are the same.

Best wishes