Yes, use it from veg. to cut. Grows green as plants in a garden center. I dont use it till plants are about 3 to 4 weeks from seed due to ferts already in fox farm soil having organic nuts. When transplanting from 20oz cup to 1 gal or 2 gal bags use a pen or sharpe to make a hole 2 to 3 inches deep placing a heavy pinch of the guano in the hole cover and water normal. Use grow bags from a hydro store at about 10 cents a piece for a reason. They don't weigh anything so you can pick up the plant when just watered knowing the weight. Pick it up again in about 3 to 5 days, when the plant is much lighter you will know it's time to water. From this point add guano monthly thru veg to cut. make sure to not add gauno last week or 2 so they naturally flush. You will have garden center green plants all the way thru just as in nature. Don't make it any harder...g luck.
cut paste from sunleaves below
High in the nutrients needed for every stage of plant growth, Sunleaves Peruvian Seabird Guano (12-11-2) is an excellent all-purpose fertilizer. All-natural with no chemical additives, Peruvian Seabird Guano is safe for use indoors and out. Nothing like it for accelerating growth, Peruvian Seabird Guano is pelletized for water solubility with less mess. Use it on houseplants, vegetables, ornamentals and fruit trees.