Plant Growth
3rd-Level Transmutation Spell (Bard, Druid, Ranger)
Casting Time: Action (Overgrowth) or 8 hour (Enrichment)
Range: 150 feet
Components: V, S
Duration: Instantaneous
This spell channels vitality into plants. The casting time you use determines whether the spell has the Overgrowth or the Enrichment effect below.
Overgrowth. Choose a point within range. All normal plants in a 100-foot-radius centered on that point become thick and overgrown. A creature moving through that area must spend 4 feet of movement for every 1 foot it moves. You can exclude one or more areas of any size within the spell's area from being affected.
Enrichment. All plants in a half-mile radius centered on a point within range become enriched for 365 days. The plants yield twice the normal amount of food when harvested. They can benefit from only one Plant Growth per year.
Source: Player's Handbook, p. 305