Oak Caps

Oak Caps | Nature’s Versatile Micro-Bowl Terrarium Botanical

Bring a touch of the temperate forest floor to your enclosure with our Natural Oak Caps. These rugged, textured acorn caps are more than just cute decor — they are highly functional accents specifically loved by keepers of smaller invertebrates and micro-fauna. Sold in 20g bags.

Why Oak Caps are a Hobbyist Favourite

• The Ultimate Micro-Bowl: Their natural cup shape makes them the perfect organic feeding station. Use them to hold jelly, pollen, or supplemental powders to keep your substrate clean.
• Arboreal Nursery Hides: For baby jumping spiders (slings) or small mantises, a single oak cap glued to the side of an enclosure provides a secure, cosy retreat that mimics their natural environment.
• Isopod Condos: When flipped upside down on the substrate, they create small, humid pockets perfect for mancae (baby isopods) to hide and grow safely away from larger adults.
• Bioactive Durability: Oak is famous for its high tannin content and density — these caps are incredibly rot-resistant, lasting a long time even in the dampest tropical setups.
• Textured Grip: The shingled exterior provides a high-friction surface, making them excellent climbing points for tiny legs.

Product Details

Pro-Scaping Tip: Glue 3 or 4 Oak Caps at different heights on a piece of cork bark or a 3D-printed branch. This creates a vertical feeding trail for arboreal species, encouraging natural foraging behaviour while looking like a natural fungal growth.

❓ Frequently Asked Questions

Do I need to prepare Oak Caps before use?
No preparation is required — our Oak Caps are dried and ready to use. If you prefer, give them a quick rinse with clean water and allow to air dry before placing in your enclosure.

Will they mould in a humid enclosure?
Oak is naturally high in tannins and very rot-resistant. Oak Caps are among the most durable botanicals available and hold up exceptionally well even in the dampest tropical setups.

Can I use them as a feeding dish?
Yes — the natural cup shape makes them ideal as a miniature feeding station. Simply place a small amount of jelly, pollen, or supplemental powder inside the cap to keep food off the substrate.

Are they safe for jumping spiders?
Yes — Oak Caps are 100% natural and pesticide-free. They are particularly popular as sling hides for baby jumping spiders — glue one to the side of a nano-enclosure for an instant naturalistic retreat.

How long will they last?
Oak Caps are among the longest-lasting botanicals available due to their high tannin content and dense woody structure. In most setups, they will last many months to years before breaking down significantly.