If you are still encountering this issue please respond with the following information: What does your quest journal say? What are you attempting to do to advance the quest? What seems to be going wrong? ~ Kaitheel
I am assuming that the problem is that you missed the bag of soil in your inventory that needs to be unpacked before you can complete the recipe. If not that, then you're having issues with the crafting station not showing the recipe, in which case you can untarget the station and hit N to open your recipe book and craft it from there. But yes, details would be appreciated.