Seed enhancers no longer exist in Path of Exile. This article describes Harvest content as it was during Harvest league. Version 3.13.0 added Harvest to the core game in a greatly simplified form that does not include any of the garden building mechanics.
Horticrafting BlossomSeeds in radius have 40% chance to generate additional Crafting Options when HarvestedRight-click this item then left-click a location within the Sacred Grove to place it.
Acquisition Not in game Drop level: 1Metadata Item class: Seed Enhancer Metadata ID: Metadata/Items/Harvest/HarvestPlantBoosterExtraCrafts3
Harvest characters will soon be migrated to their respective parent leagues. The Sacred Grove and its contents have been removed. Harvest Infrastructure and Seeds outside of The Sacred Grove will be removed at a later date.
Tier 2, Tier 3, Tier 4 and the Heart of the Grove monsters and bosses now have a chance based on their rarity, with higher-tier seeds having a higher chance, to drop a new plantable "seed". This can be placed in the Sacred Grove and will affect planted seeds around it, granting nearby seeds additional properties on being Harvested.