Uploaded July 2026 | Updated September 2026, 4 days ago
Peach leaf curl can badly affect peaches and nectarines—but can citrus peel, pruning and airflow help reduce the problem without routine spraying?
Dr Mary Cole shows the low-input orchard approach used on her chemical-free property, including a small peach tree that produced more than 40 peaches with only three or four affected leaves.
Mary places fresh citrus peel beneath her stone fruit trees, keeps the canopy open and removes the occasional affected leaf before solarising it in a sealed plastic bag. She explains why she believes compounds in the peel, including flavonoids, contribute to suppressing leaf curl.
This is an on-property observation and practical biological-management approach rather than a controlled field trial. The video also explores an important, well-established part of fungal disease management: reducing the amount of time leaves remain wet.
You will learn:
• Why open pruning improves sunlight and airflow
• How prolonged leaf wetness encourages fungal spore germination
• How Mary uses citrus peel beneath her trees
• How affected leaves are removed and solarised
• Why canopy structure matters in a low-input orchard
• The result Mary has observed on her property for decades
Peach leaf curl, sometimes called curly leaf, is associated with the fungus Taphrina deformans and commonly affects peaches and nectarines. This practical discussion connects stone fruit disease management with canopy pruning, leaf wetness, orchard airflow, citrus peel mulch, biological farming and reducing reliance on routine fungicide applications.
GUEST AND SYSTEM
Guest: Dr Mary Cole https://agpath.com.au/
Property: Dr Mary Cole’s long-term chemical-free property in Victoria
Practice featured: Citrus peel beneath stone fruit trees, open-canopy pruning and removal of affected leaves
Problem explored: Peach leaf curl on peaches and nectarines
Reported result: More than 40 peaches from a small tree with only three or four affected leaves
Sponsor: None stated
WATCH NEXT ON FARM LEARNING
• Soil Biology, Compost & Biological Inputs
• Biological disease management without routine synthetic chemicals
• Practical pruning, airflow and plant-health management
• Regenerative Agriculture Case Studies
Subscribe to Farm Learning with Tim Thompson for practical agricultural education, real farm experience and clear explanations of biological farming systems.
Share this video with orchard growers, landholders and small-farm owners working through peach leaf curl. Add your own experience below: have citrus peel, pruning, airflow or another low-input method made a difference on your trees?
#PeachLeafCurl #StoneFruit #BiologicalFarming #FruitTreeCare #FarmLearning
00:00 Can peach leaf curl be managed without spraying?
00:17 Dr Mary Cole’s chemical-free orchard approach
00:56 Why citrus peel goes beneath the trees
01:16 How citrus compounds may affect leaf curl
01:25 Removing and solarising affected leaves
01:36 Over 40 peaches from one small tree
01:47 Pruning for sunlight and airflow
02:16 Why fungal spores need leaf moisture
02:37 Drying the canopy before spores germinate
02:57 Mary’s three-part orchard approach
03:07 More biological farming with Dr Mary Cole
Peach leaf curl can badly affect peaches and nectarines—but can citrus peel, pruning and airflow help reduce the problem without routine spraying?
Dr Mary Cole shows the low-input orchard approach used on her chemical-free property, including a small peach tree that produced more than 40 peaches with only three or four affected leaves.
Mary places fresh citrus peel beneath her stone fruit trees, keeps the canopy open and removes the occasional affected leaf before solarising it in a sealed plastic bag. She explains why she believes compounds in the peel, including flavonoids, contribute to suppressing leaf curl.
This is an on-property observation and practical biological-management approach rather than a controlled field trial. The video also explores an important, well-established part of fungal disease management: reducing the amount of time leaves remain wet.
You will learn:
• Why open pruning improves sunlight and airflow
• How prolonged leaf wetness encourages fungal spore germination
• How Mary uses citrus peel beneath her trees
• How affected leaves are removed and solarised
• Why canopy structure matters in a low-input orchard
• The result Mary has observed on her property for decades
Peach leaf curl, sometimes called curly leaf, is associated with the fungus Taphrina deformans and commonly affects peaches and nectarines. This practical discussion connects stone fruit disease management with canopy pruning, leaf wetness, orchard airflow, citrus peel mulch, biological farming and reducing reliance on routine fungicide applications.
GUEST AND SYSTEM
Guest: Dr Mary Cole https://agpath.com.au/
Property: Dr Mary Cole’s long-term chemical-free property in Victoria
Practice featured: Citrus peel beneath stone fruit trees, open-canopy pruning and removal of affected leaves
Problem explored: Peach leaf curl on peaches and nectarines
Reported result: More than 40 peaches from a small tree with only three or four affected leaves
Sponsor: None stated
WATCH NEXT ON FARM LEARNING
• Soil Biology, Compost & Biological Inputs
• Biological disease management without routine synthetic chemicals
• Practical pruning, airflow and plant-health management
• Regenerative Agriculture Case Studies
Subscribe to Farm Learning with Tim Thompson for practical agricultural education, real farm experience and clear explanations of biological farming systems.
Share this video with orchard growers, landholders and small-farm owners working through peach leaf curl. Add your own experience below: have citrus peel, pruning, airflow or another low-input method made a difference on your trees?
#PeachLeafCurl #StoneFruit #BiologicalFarming #FruitTreeCare #FarmLearning
00:00 Can peach leaf curl be managed without spraying?
00:17 Dr Mary Cole’s chemical-free orchard approach
00:56 Why citrus peel goes beneath the trees
01:16 How citrus compounds may affect leaf curl
01:25 Removing and solarising affected leaves
01:36 Over 40 peaches from one small tree
01:47 Pruning for sunlight and airflow
02:16 Why fungal spores need leaf moisture
02:37 Drying the canopy before spores germinate
02:57 Mary’s three-part orchard approach
03:07 More biological farming with Dr Mary Cole
