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How to grow a staghorn fern 
Scrape spores off the bottom of a fern leaf. 
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.

1). While you can strip this off if you don't have a fancy bottom, its shells and smaller group of leaves will probably work best. Hold the leaf underneath a green plastic cup to keep the green sides of the leaf cool..
2). If you only want a single layer, scrape the tiny white dots out the bottom rather than scraping them off. What this does is include a " sieve " at the bottom of the leaf that puffs up little specks of spores..
3). Pick up the leaf and discard it. In the process, you may want to scrub away the specks of spores that have collected on the leaf..
4). 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..
4).