Welcome and congratulations on your new flytrap!
Grow mix…50:50 ratio of:
Peat moss:perlite
Peat moss:coarse sand
Long fibered sphagnum moss:perlite
Long fibered sphagnum moss:coarse sand
100% long fibered sphagnum moss
…there’s other more complex mixes.
The LFSM would probably be the most earth friendly in regards to the moss. Coconut coir is far to risky with its possibly very high salt content, especially for someone just trying to grow flytraps.
If you use sand be sure to use silica/quartz sand. Coarse sand. Anything with soft minerals in it will leach minerals into your growing medium, making your plant sick or outright killing it. So no limestone or the like. You can test the sand by putting some of it in a glass or jar and adding some white vinegar…watch for fizzing/bubbling. Wait another 30 minutes and look again. If there’s no fizzing it should be safe to use. YMMV
Water. If it rains put some buckets out to catch rainwater. Some of the best stuff. For one or two flytraps a gallon will last a long time. Distilled water comes in gallon jugs…save the jug and store rainwater in it. Rainwater is acidic, which carnivorous plants like. The purest water is distilled but it’s pH is neutral, which isn’t a bad thing…just not as good as rainwater, IMHO.
I usually filter my rain water through an old towel or t-shirt to get any debris out before filling the jug with it…it seems to store better and not turn green as quickly if I filter it. I love rainwater.
Keep your flytrap in 1/4 to 1/2 inch deep water. Let the water tray/saucer go dry for a day or so between watering. Depth really depends on pot height…shallow pot (4”) shallow water…deep pot (6”) deeper water. ..roughly.
Filtered water is very iffy. Unless you are using a Zerowater filter then the TDS (mineral content) will only drop a small amount. My tap water’s TDS level hits in the 325ppm range and my Pure filter only lowers it 50 or 60ppm. The recommended level is less than 50ppm. Btw, I’ve found that Aquafina bottled water has a low TDS, at least the bottles that I’ve tested here in south Alabama do. Dasani has high TDS…not good. If a label says “minerals added” run fast from it if intended use is for carnivorous plants.
Many times you can find your areas water quality report online to give you an idea about whether your water might be okay for flytraps. Don’t forget to let the water sit uncovered over night to get rid of chlorine…if you decide to use it. A TDS meter is highly recommended. Here is the meter I have:
https://www.amazon.com/dp/B07H578WWT?re ... b_ap_share
Feeding… Like Chef said, it ain’t necessary. But, if you do feed, only feed a trap a piece of food that is 1/3 the size of the trap. Too big and the trap will probably die. I would feed one trap on the plant every 2-3 weeks. Remember that a flytrap’s trap can only close and open maybe a half dozen times, maybe less, before it stops working.
Pots…use only plastic or resin ones. No metal, no ceramic, no terracotta. All can leach bad things into the growing medium.
Light…flytraps require lots and los of light. Windowsills usually are not good enough. A gradual introduction to full sun is best. Otherwise, 16 hours a day beneath a good grow light.
Outdoors by far the best place to grow flytraps.
What is your general location? Nearest big city is good enough. It helps folks to know the climate that your growing in. I’m south of Montgomery Alabama, so hot muggy summers and sometimes cold winters down into the mid 20F’s occasionally.
The biggest thing to do is enjoy your journey learning about the plants. Have fun!!!