[header] How to grow a staghorn fern [title] Scrape spores off the bottom of a fern leaf. [step] Hold a leaf from a staghorn fern over a white piece of paper, bottom side up. Use a butter knife to gently scrape off the little brown dots all over the bottom of the leaf. 
Once you have a pile about the size of a quarter, you can stop. Be careful to keep the spore pile on the piece of paper.