Just don't depend on them as your primary snake-control strategy.
Garlic
Garlic is another plant frequently recommended because of its strong sulfur-containing compounds.
Freshly crushed garlic has a much stronger odor than an intact plant, which is why concentrated garlic-based products are sometimes used in various pest-control applications.
But once again, there is a difference between a concentrated repellent formulation and simply growing garlic in the soil.
There is not strong evidence that a garden full of garlic will reliably prevent snakes from entering.
Garlic can nevertheless be useful in the garden and kitchen.
It is an inexpensive crop that provides flavor and can be incorporated into many healthy meals.
If you are planting garlic partly because you have heard that snakes dislike its smell, consider the possible benefit a bonus rather than a guarantee.
A snake may still enter the area if there is food, shelter, or water available.
This is a recurring theme with natural pest-control advice.
A plant can have an interesting chemical profile without being an effective standalone pest-control system.
Image 2 — suggested placement:
Realistic photograph of a European woman in her 40s planting garlic and bright marigold flowers around a small home garden, natural outdoor light, healthy gardening lifestyle, realistic soil and plants, no text, no logo, no watermark.
Chapter 4: Plants #4 and #5 — Onion and Snake Plant
Onion
Onions contain sulfur-containing compounds that give them their characteristic smell.
Because strong odors are often associated with natural snake-repellent claims, onions frequently appear on lists of plants supposedly capable of keeping snakes away.
But, just like garlic, simply planting onions does not provide a scientifically established protective barrier against snakes.
Onions are much more valuable for what they actually are: a nutritious culinary vegetable that provides fiber and various plant compounds.
If you already grow onions, there is no harm in enjoying them as part of your garden.