Iris leaf spot

Time to act:

Jun, Jul, Aug, Mar, Apr, May, Sep, Oct, Nov

A fungal disease weakens the plant and can seriously reduce its flowering performance. The brown spots eventually grow together and develop grey centres. Infection is caused by air or water-borne spores entering the plant through damaged leaves. In wet weather the fungus spreads quickly. The spores are persistent and overwinter in the soil and on old leaves, stems and rhizomes.

Symptoms

Ugly brown speckles appear, merging to affect entire leaf in extreme cases.

Find it on

irises

Advertisement

Organic

Healthy plants are less likely to succumb to an attack. Clear away leaf debris lying on the ground around the plants. Take care not to damage leaves and stems unnecessarily.

Advertisement

Discover more ideas and inspiration

Related content

Iris reticulata

Hollyhock rust

How to prune apple trees in summer

Iris, ivy and fern pot display

Related offers

FREE P&P

Subscriber only content

Save on autumn plants

Choose from a selection of great offers on varieties to plant this autumn at Thompson & Morgan. All featured offers also include free p&p.

Unlock now

FREE P&P

Save £20 on daffodils

Choose from a selection of money-saving offers on varieties to plant this autumn, including bulbs, acers, perennials and more.

Order now

Offer

Claim your free lilies

Fill your garden with summer colour with established plants from Bakker.com. You'll get three Oriental lily 'Mother's Choice' bulbs with any order.

Use code: BBCGWAUGUST

Order now