How to Make Grafting Paste

Written by samantha lowe
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How to Make Grafting Paste
Grafting two plants together is a common way of combining the desired properties of both. (innesto image by jill_v from

Grafting is the most common means of combining two different trees or plants in order to use the benefits of both. Different means have been used to graft over centuries, even though some plants have been known to graft naturally. Using grafting paste around the graft, or where the two plants have been combined, seals the cuttings and prevents moisture and fungus from penetrating the cut. While this grafting paste can be found at any gardening store, it is more affordable to make it yourself and it will also keep longer, for you only have to make as much as you need at a time.

Skill level:

Things you need

  • White limestone powder
  • Small bowl
  • Large paint spatula
  • Sealable container

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  1. 1

    Pour limestone powder into the small bowl. If doing a small graft, on a bush, only use 1/2 cup. If doing a larger branch or even tree graft, use about 1 cup.

  2. 2

    Pour in enough water to make a paste, in a ratio of one part water to every four parts limestone powder. Mix it thoroughly.

  3. 3

    Place the mix around the graft of the tree using the painting spatula.

  4. 4

    Place the excess in a sealable container so it does not dry out.

  5. 5

    Keep the limestone powder in a cool, dry place, and only use as much is needed for each graft.

Tips and warnings

  • White limestone powder can be found at almost any gardening store, however, it is also a component of Thai cooking and can often be found in Thai food speciality stores.
  • Only use white limestone powder; any other limestone powders can have imperfections that can damage the plant.

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