Forsythia dream meaning is explained below using 2 different sources. Each interpretation is shown with its source.

Interpretation 1 — Stearn Robinson - Tom Corbett

Peace of mind is the message in a dream featuring this lovely bush in bloom; to see its yellow blossoms in an indoor arrangement predicts a happy new love affair.
Source: The Complete Guide to Interpreting Your Dreams Author: Stearn Robinson - Tom Corbett

Interpretation 2 — Versatile - Anonymous

Anticipation of good times.
Source: Dream Meanings of Versatile Author: Versatile - Anonymous