24 hrs...how many hours in between pics?
Almost every single rooting hormone on the market uses this stuff my friend. And auxins do not injure plants. Auxins are naturally contained in plants. In fact, they were the FIRST hormone discovered in plants. Now, what you read is a BS explanation concocted to get you to buy something. Like with LED lights. However, you are right that it is not necessary to cake the stuff on for rooting purposes. Many plants just need a little bit of encouragement, sometimes, as seen all over this thread, all that means is to take a cutting and place it in moist warm media and it will do the work on its own.The ingredient I was researching is an acid ( Indole-3-Acetic Acid )
Well I likes this post!..............and this quote even better!