Sports Turf Agronomy Advice - June 2026
As we move into June, turf managers will be glad of the rise in temperatures towards the back of May and will be hoping for a more settled spell of weather after a spring which has once again delivered challenging conditions across the UK.
Dollar spot
The cold and dry conditions have severely restricted growth which has delayed achieving surface performance standards across multiple sport disciplines. With soil temperatures now consistently favourable, night-time temperature much higher and daylight hours at their peak, conditions are in place for strong recovery and growth through June, provided moisture and nutrition are managed effectively.
Forecasts for June suggest the start of the month will be unsettled, which given the recent high temperatures will mean there is a flush of growth. The use of plant growth regulators through this period may provide a useful strategy. The remainder of the month look more settled and temperatures remain favourable without being too high, causing more stress on the turf.
The stress that the plant has been under through spring is not to be easily forgotten in the presence of good growing conditions. As is often the scenario, once conditions become conducive for disease development, these are the areas that show first sign of infection. Although at the time appeared completely healthy.
Moisture management
Regular monitoring of soil moisture levels is essential during June, particularly following the inconsistent spring conditions experienced this year. Dry patch and localised hydrophobic areas can quickly develop when surfaces transition from wet to dry conditions, especially on free-draining profiles and high-stress areas. This can also be a trigger for certain diseases, coupled with high humidity.
Preventative wetting agent programmes remain one of the most effective tools for maintaining consistent moisture distribution through the profile. Ensuring even water infiltration and retention not only supports healthier rooting but also improves nutrient uptake efficiency and overall surface consistency.
Where irrigation is available, moisture inputs should be targeted carefully using moisture meters and evapotranspiration (ET) data wherever possible. Hand watering isolated dry areas can often provide a more effective and sustainable approach than blanket irrigation, particularly during periods of high evapotranspiration.
Cultural practices such as sarrel rolling and pencil tine aeration also continue to play an important role in maintaining gaseous exchange and encouraging water movement deeper into the profile. Encouraging deeper rooting will help improve plant resilience during periods of environmental stress later in the summer. Research has shown carrying this work out ahead of sign of stress yields better results than trying to relieve and recover from stress.
Plant health and nutrition
With GDD accumulation continuing to rise, maintaining balanced fertility is essential to support recovery, encourage density and reduce plant stress. However, nutrition should be managed carefully to avoid promoting excessive soft growth during periods of heat or humidity.
Those who are in a period of grow-ins on sports pitches will need to balance nutrition to maximise the rooting potential whilst providing enough vegetive top growth in the available window they have been given.
Plant growth regulators can continue to provide significant benefits through the summer months by improving surface consistency, reducing stress and encouraging stronger rooting. Application timing should remain closely aligned with actual growth rates and environmental conditions. The collection and measurements of clippings is an incredibly useful tool for monitoring the actual growth for informing both nutrient and PGR applications.
Where surfaces are under stress from drought, wear or intensive maintenance, reducing additional stress factors wherever possible will improve overall plant resilience and recovery capacity.
Disease management
Disease pressure can increase rapidly during June as overnight temperatures rise and humidity levels remain elevated. Anthracnose continues to be a primary concern on stressed fine turf surfaces, particularly where low fertility, drought stress or compaction are present.
Maintaining adequate nitrogen levels, consistent soil moisture and healthy rooting will help reduce susceptibility to infection. Preventative management remains key, especially on sites with a history of outbreaks during summer months.
Dollar Spot also continues to become more prevalent across southern regions of the UK, although anecdotal evidence would suggest this pattern is moving to more northern regions too. Warm days combined with humid nights create highly favourable conditions for disease development, particularly where leaf wetness periods remain prolonged due to dew formation or irrigation practices.
Minimising extended surface moisture, improving airflow and maintaining balanced plant nutrition can all help reduce disease pressure. However, where prolonged favourable conditions persist, preventative fungicide applications may still be necessary as part of an integrated disease management strategy.
Pests
Chafer grub monitoring should continue throughout June as adult activity increases. Recording peak flight periods will help ensure that any subsequent applications are timed effectively and within label recommendations.
Where authorised products are being used, applications should always follow current label guidance and be supported by accurate monitoring data. Turf managers using biological controls such as entomopathogenic nematodes should ensure soil moisture and temperature conditions are suitable to maximise efficacy, otherwise results can be below expectation levels.
June brings some of the best growing conditions of the year, but also some of the greatest challenges in maintaining consistency and managing plant stress. Careful observation, proactive management and attention to detail will remain essential in achieving strong, resilient surfaces throughout the summer period. And hopefully leads us into a relatively stress-free summer, after a challenging previous summer and spring just gone.
Tom Wood
B.Sc (Hons) | MBPR | FQA