AD&D 2nd Edition

Range: 10 yds/level
Components: V, S
Duration: Permanent
Casting Time: 4
Area of Effect: caster’s level(2) x 100 sq. ft.
Saving Throw: None

When a plant growth spell is cast, the wizard causes normal vegetation to grow, entwine, and entangle to form a thicket or jungle that creatures must hack or force a way through at a movement rate of 1 per round (or 2 if the creatures are larger than man size). The area must contain brush and trees for this spell to work. Briars, bushes, creepers, lianas, roots, saplings, thistles, thorn, trees, vines, and weeds become thick and overgrown so as to form a barrier.

The area of the effect is the caster’s level, squared, times 100 square feet. This area can be arranged in any square or rectangular shape that the caster desires. Thus, an 8th-level wizard can affect (8×8=) 64 x 100 square feet, or 6,400 square feet. This could be an 80 foot x 80 foot square, a 160 foot x 40 foot rectangle, a 640 foot x 10 foot rectangle, etc.

Individual plant girth and height is generally affected less than thickness of brush, branch, and undergrowth. The spell’s effects persist in the area until it is cleared by labor, fire, or such magical means as a dispel magic spell.