Leaf and mixed stage inflorescence tissue were flash frozen in liquid nitrogen, and then the tissue was ground to a fine powder with a mortar and pestle. Leaf tissue was used for genomic and RNA-Seq, and the tissues used for each MethylC-Seq experiment is listed in Supplementary Table 1. DNA was isolated using a Qiagen Plant DNeasy kit (Qiagen, Valencia, CA) following the manufacturer’s recommendations. RNA was isolated using the Qiagen Plant RNeasy kit (Qiagen) following the manufacturer’s instructions.