Q What is pear rust?

A Pear rust is a fungal disease that attacks pears and junipers.

Caption: The distinctive spots appear in spring and enlarge over summer and autumn

Q How do I recognise pear rust?

A Red or orange spots, which are 1-2mm in diameter, develop on the upper surface of infected leaves in spring, enlarging as the season progresses through summer into autumn. Later, raised and almost horn-like spore-bearing projections appear on the lower leaf surface as the fungus really gets hold. Occasionally, cankers will develop, too. Junipers may develop similar outgrowths.

Q How do I prevent it occurring?

A Pear rust fungus requires a juniper to complete its life cycle. You can prevent further infections occurring by regularly checking pear and juniper plants growing nearby, and pruning out any affected areas. Picking off infected leaves promptly will also help to limit the spread of the fungus.

Q How can I help affected plants?

A Pear rust fungus requires a juniper to complete its life cycle. You can prevent further infections occurring by regularly checking pear and juniper plants growing nearby, and pruning out any affected areas. Picking off infected leaves promptly will also help to limit the spread of the fungus. There are no chemicals available to control it.