Fertilseed Pro is an Item that can be found within common locations, including choice enemy Camps, given by Spouses, and rarely as a reward from Seasonal Festivals. Upon being picked up, all future harvested Crops will have a 30% chance to drop a seed of their specific variety. For example, Prickly Pears will drop Prickly Pear Seeds roughly a third of the time when harvested. This chance does not apply to Heart Beets, Roses, or Fruit Trees; they will remain completely unaffected by Fertilseed Pro.
Compared to most other Items, Fertilseed Pro is one of the few that allows for the player to gain more seeds from already planted Crops. In this regard, the main rival is Thankful Crops, which sometimes awards a seed when a Crop is watered. However, unlike Fertilseed Pro, Thankful Crops can also award Fertilizer. Depending on the circumstance, Thankful Crops may be stronger for collected more of both resources. Furthermore, for Crops that require more water the player may have a better chance to get more resources overall. Despite this, Fertilseed Pro may be better for collecting seeds due to its high chance to activate and the chance not being split between two resources. As such, when given the choice between the two players need to think carefully based upon their current build and what Crops they are going for before deciding.