Japanese Tree Sealer is a paste-type wound sealer used by bonsai professionals and gardeners across Japan. Designed to protect small cuts and scrapes on trees, this product helps prevent rot, disease, and desiccation while promoting healthy healing of pruned areas.

Ideal for small cuts (under 2 cm), it forms a protective coating over wounds that keeps out rainwater, bacteria, and fungi. It’s especially useful for tree species that are slow to heal or prone to cracking.

Tree Sealer won’t melt in rain or sun once set and won’t discolor bark. For best results, avoid watering or exposing to rain for 3–4 hours after application.

• Paste-type wound sealant for bonsai trees
• Helps prevent infection, cracking, and sunburn on fresh cuts
• Water-soluble before drying—keep dry for several hours after use
• Made in Japan

Kaneshin bonsai tools are widely regarded as some of the finest in the world. Handcrafted in Japan since 1919, each tool is made using time-honored techniques passed down through generations. With high-grade steel and expert craftsmanship, Kaneshin tools are trusted by beginners and professionals alike.