I haven't seen anything posted about “growing oats.” Here's 1/2 cup (40g) old-fashioned oats cooked the normal way vs the same amount cooked with 2 cups liquid and double the cooking time. :
Quaker Large Flake Oats | Quaker
Kathleen's Quick Oats Brown Sugar Oatmeal Cup - Shop Cereal & Breakfast at H-E-B
Happy GRAM - Happiness In Every GRAM ! Cafe Mocha Instant Cup Oats | Ready To Eat| 24 GRAMs Whey Protein Isolate, 9 GRAMs Fiber| Zero Added Sugar : Amazon.in: Health & Personal Care