Field skills
Basic Bushcraft & Desert Survival
Simple, proven skills for staying alive in the Sonoran Desert and Arizona's high country if you're stranded or have to move on foot. Practice them on a cool day, long before you need them.
1. Survival priorities: the "rule of 3s"
The "rule of 3s" is a popular memory aid for setting priorities: deal with breathing and bleeding first, then protection from the environment, then water, then food. The numbers are rough. Children, older adults, and anyone in extreme heat have far less time. In the desert, shade and water come first, and food comes a distant last. Also: tell someone your plan, and if you're lost, stay with your vehicle when it's safe. A car is easier to spot than a person, and it gives you shade.
2. Desert shelter & shade
- Get out of the sun during the hottest hours. Rest in shade and move in the early morning, evening, or night.
- Use what you have: a car (windows cracked and a sunshade up), a tarp, an emergency blanket, or the shade of rocks or trees. Don't lie directly on hot ground. The surface can be far hotter than the air.
- Never shelter in a dry wash or arroyo. Monsoon storms miles away can send a flash flood through with little warning (NWS: Turn Around, Don't Drown).
- At night and at elevation it gets cold. Use an emergency blanket and dry layers.
3. Water: finding, collecting & purifying
- Carry it. No desert technique replaces water you brought. Ration sweat, not water: FM 21-76 warns "Do not ration your water!" Drink what you need and cut sweating by resting in shade during the heat of the day (Ch. 13).
- Where water may be: mapped springs and tanks (often dry), rivers and lakes, catchment from rain (a tarp or poncho), and green vegetation that hints at moisture below.
- Purify everything: boiling is best, a rolling boil for 1 minute (3 minutes above 6,500 ft). Next best is a filter labeled for parasites followed by chemical disinfection (chlorine dioxide tablets, or unscented bleach as directed). Treatment doesn't remove chemical contamination (CDC, CDC emergency water).
Solar stills are a poor plan. FM 21-76 says one takes about 24 hours to make 0.5 to 1 liter, and you'd need at least 3 to meet one person's daily needs (FM 21-76, Ch. 6). A 2025 review found solar stills averaged under 0.6 L/day and cost 375–500 kcal of effort to build, which means sweat (medRxiv review). Digging one in the heat can cost more water than it makes.
4. Fire
- Methods: a lighter (carry two), waterproof matches, or a ferro rod with dry tinder (cotton balls with petroleum jelly, commercial tinder).
- Check fire restrictions first. Arizona's forests often ban campfires, and even stoves may be limited during high fire danger. A wildfire you start can kill you and others. Check the national forest or Arizona Dept. of Forestry & Fire Management before using fire.
- In summer you rarely need fire for warmth in the low desert. Use it for signaling or boiling water only when it's legal and safe: clear the ground, keep water nearby, and drown and stir it cold before leaving.
5. Signaling for help
- Three of anything (whistle blasts, fires, flashes) is a widely recognized distress signal. FM 21-76 calls three fires in a triangle, or three columns of smoke, the international distress signal. A whistle carries farther than your voice and uses less energy.
- Signal mirror: aim the flash at aircraft or distant vehicles. On a sunny day it can be seen for miles.
- Ground-to-air symbols: make them large (10+ ft) and high-contrast with rocks, clothing, or branches. V = require assistance, X = require medical assistance (FM 21-76, Ch. 19).
- Phones: text 911 if a call won't go through (where supported). Texts often get through when calls can't. Save battery by turning on airplane mode between checks.
6. Navigation
- Paper map and compass work with no signal. Mark your route and turnoffs before you go. In the Valley, the mountains help: South Mountain to the south, the McDowells and Four Peaks to the east, the White Tanks to the west.
- Sun: rises roughly east and sets roughly west. At midday in Arizona it's to the south.
- Stars: Polaris (the North Star) sits almost due north. Find it from the two "pointer" stars at the end of the Big Dipper's cup.
- Follow known features like roads, power lines, and canals rather than cutting across open desert.
7. Four useful knots
These are simplified sketches. Practice with real rope using step-by-step guides such as Animated Knots or a hands-on class.
8. Basic tools & knife safety
- A fixed-blade or locking folding knife, a multi-tool, duct tape, cord, and work gloves cover most needs.
- Cut away from your body and keep others outside your "blood circle" (arm's length plus the blade). Close or sheath the knife when you aren't using it, and never catch a falling knife.
- A cut far from help is serious. Pack a bleeding-control kit and know how to use it (Stop the Bleed).
9. Field first aid
- Heat illness: see our Heat guide. Heat stroke (confusion, very hot skin, collapse) is a 911 emergency. Cool the person immediately with water, shade, fanning, and ice on the neck, armpits, and groin.
- Rattlesnake bite: get to emergency care right away. Keep the person calm and still, and remove rings and tight items. Do NOT use a tourniquet, cut the wound, suck out venom, apply ice, or give alcohol or pain relievers like aspirin or ibuprofen (CDC/NIOSH). Suction kits don't work.
- Bark scorpion sting: wash with soap and water, apply a cool compress, and call Poison Control at 1-800-222-1222 right away, especially for a child or if symptoms spread. Never use a tourniquet (Banner Poison Center, Poison Control).
- Cactus spines: use tweezers for big spines and tape or glue for tiny glochids.
- Bee attack (Africanized bees): run to a building or car while covering your face. Don't swat, and don't jump into water. Seek care after many stings or any allergic symptoms (UA Extension).
Dressing for the sun: why loose full coverage beats bare skin, how to turn a bed sheet into a sun wrap, and desert footwear: To Cover Up, Or Not to Cover Up.
Full species guide: the Wildlife Field Guide covers every venomous animal and toxic look-alike on the route, plus edible plants and game with photos.
10. Food: water matters more
Digestion uses water, and you can go weeks without food but only hours to days without water in heat. If water is short, eat little. Native foods are real, but take skill and the right season:
- Prickly pear: young pads (nopales) and ripe fruit (tunas) are edible once the spines and tiny glochids are removed. Use tongs or gloves (UA Extension).
- Mesquite pods: pick dry, rattly pods from the tree (never from the ground) before monsoon rains, and discard moldy or spotted pods to reduce aflatoxin risk (UA Extension).
- Saguaro fruit, palo verde, and desert ironwood seeds are traditional foods, but harvest is seasonal and protected-plant rules apply. Never cut or damage a saguaro.
- Poisonous look-alikes and toxic plants: datura (sacred datura/jimsonweed: big white trumpet flowers and spiny seed pods) and oleander (a common landscaping shrub) are seriously toxic. If you aren't 100% sure, don't eat it. Call Poison Control at 1-800-222-1222.
- The law: collecting is banned or restricted in many parks, preserves, and monuments. Arizona's native plant law requires permits to take protected plants from state or public land, and landowner permission on private land (ARS 3-908). Tribal lands need tribal permission.
11. Dangerous wildlife & plants in Arizona
Rattlesnakes
Most active in warm months, often at dusk and night. Watch where you put your hands and feet, and give them space.
Bark scorpions
Small, tan, and good climbers. They hide in shoes, bedding, and dark damp spots. Shake out your gear and use a UV flashlight at night.
Africanized bees
They defend their hives aggressively. Avoid buzzing cavities and loud engines near hives, and run if attacked.
Gila monsters & black widows
Gila monsters are rarely aggressive, so leave them alone. Black widows hide in woodpiles and sheds. Wear gloves.
Cholla & other cacti
"Jumping" cholla segments stick with the slightest touch. Carry a comb to flick them off and tweezers for the spines.
Datura & oleander
Both are highly toxic if eaten. Keep kids and pets away.
Sources: U.S. Army FM 21-76 Survival (public domain; chapters 6, 13, 18, 19), CDC, NIOSH, NWS, UA Cooperative Extension, Banner Poison & Drug Information Center, Arizona Revised Statutes. This page is general education, not a substitute for training or professional medical care.