{"id":35258,"date":"2026-05-18T14:06:19","date_gmt":"2026-05-18T04:06:19","guid":{"rendered":"https:\/\/naturalhorseworld.com\/stage\/?p=35258"},"modified":"2026-05-18T14:06:19","modified_gmt":"2026-05-18T04:06:19","slug":"strategic-worming-for-horses-a-natural-sustainable-approach","status":"publish","type":"post","link":"https:\/\/naturalhorseworld.com\/stage\/strategic-worming-for-horses-a-natural-sustainable-approach\/","title":{"rendered":"Strategic Worming for Horses: A Natural, Sustainable Approach"},"content":{"rendered":"

Are You Worming Your Horse Out of Habit \u2014 Or Out of Need?<\/span><\/h1>\n

\"wormingHere’s a question: when did you last worm your horse, and do you actually know if they needed it?<\/p>\n

For most of us, worming has been a calendar event \u2014 every 6, 8, or 12 weeks, regardless of what’s actually going on inside our horse. And for a long time, that’s what we were all told to do.<\/p>\n

But the science has moved on, and so have I.<\/p>\n

Worms: What Most People Don’t Know<\/h2>\n

All grazing horses carry worms \u2014 and that’s completely normal. A low worm burden actually helps keep the immune system ticking along nicely. It’s only when numbers get out of hand that things go wrong: weight loss, colic, diarrhea, and in serious cases, life-threatening illness.<\/p>\n

The problem is, we can’t tell which horses actually have high worm burdens just by looking at them. Some horses are what we call “low shedders” \u2014 they naturally keep their worm numbers in check. Others are “high shedders” and need more support. Worming every horse the same way ignores all of that.<\/p>\n

And here’s the bigger issue: decades of routine worming have created anthelmintic resistance. Worms are adapting faster than new drugs can be developed. We are genuinely running out of effective options \u2014 and blanket worming is making it worse.<\/p>\n

What Strategic Worming Actually Looks Like<\/h2>\n

The good news? There’s a smarter way, and it’s not complicated.<\/p>\n

Strategic worming is built on one simple principle: test, don’t guess.<\/strong><\/p>\n

Fecal Egg Counts (FECs) in spring, summer, and autumn<\/strong> tell you which horses actually need treating. Only high shedders \u2014 usually over 300 eggs per gram \u2014 get wormed during the grazing season.<\/p>\n

Annual Fecal Egg Count Reduction Tests (FECRT)<\/strong> check whether the wormers you’re using are still working. This matters more than most people realise.<\/p>\n

Autumn and winter<\/strong> are the time to think about encysted redworms (small strongyles\/cyathostomes) \u2014 the sneakiest and most dangerous of the lot. Their larvae can hide deep in the gut wall and emerge all at once, causing severe, sometimes fatal diarrhea. Young and high-risk horses may need a targeted treatment like moxidectin at this time of year.<\/p>\n

Tapeworms<\/strong> are worth addressing once a year, or you can use a saliva or blood test if that’s available to you.<\/p>\n

Foals<\/strong> need a more structured program from about 2\u20133 months of age, guided by regular FECs.<\/p>\n

Don’t Forget the Pasture<\/h2>\n
\"Harrowing\"
Harrowing spreads and breaks up manure so can be a good tool if pasture can be rested for at least 8-12 weeks afterwards.<\/em><\/figcaption><\/figure>\n

Here’s something that often gets overlooked: your paddock management is your first line of defense.<\/p>\n

Regular poo-picking (removing droppings 2\u20133 times a week), rotating paddocks, avoiding overgrazing, and cross-grazing with cattle or sheep can dramatically cut worm exposure before you ever reach for a wormer.<\/p>\n

Good land stewardship protects your horses AND the soil ecosystem \u2014 including dung beetles and insects that are harmed by wormer residues passing through manure.<\/p>\n

For more on how I approach this, have a read of these:<\/p>\n