By |Categories: Jesson Garden Centre Blog|Last Updated: June 26, 2025|

Summer gardening tips

Summer is one of the most rewarding seasons for gardeners in Ireland. Mild temperatures, a good balance of sunshine and showers, means your garden is likely bursting into life.  The Irish weather can be fickle so here are a few general tips on making the most of things this summer.

General Tips

  • Water early or late: Water in the morning or evening to reduce evaporation.
  • Mulch: Use bark, straw, or compost to retain moisture and suppress weeds.
  • Check rain levels: Irish summers can be dry in spells; if there’s less than 1″ (25mm) of rain a week, water deeply.

Lawn Care

  • Raise the mower: Keep grass slightly longer (5–7cm) to retain moisture and resist drought.
  • Feed your lawn: Use a summer feed high in nitrogen (early summer) or a balanced feed.
  • Spot treat weeds: Remove them before they flower and spread.

Flowers & Bedding Plants

  • Deadhead regularly: Encourages new blooms in annuals like petunias, geraniums, and marigolds.
  • Feed containers weekly: Use a high-potash feed like tomato food for planters and hanging baskets.
  • Keep an eye on slugs: Especially after rain; use barriers or organic slug pellets.

Vegetable Garden

  • Harvest frequently: Pick courgettes, beans, lettuce, etc., to encourage more growth.
  • Sow succession crops: Salad leaves, radish, beetroot, and spring onions can still be sown.
  • Support taller plants: Tie up tomatoes, peas, and beans to prevent wind damage.

Fruit & Shrubs

  • Net soft fruits: Protect strawberries, raspberries, and currants from birds.
  • Prune stone fruits: July is good for pruning cherries and plums (reduces risk of silver leaf disease).
  • Keep an eye on aphids: Spray with soapy water or introduce ladybirds.

Greenhouse/Polytunnel

  • Ventilate well: Open doors and vents daily to prevent mildew.
  • Dampen floors: Helps control temperature and humidity.
  • Watch for whitefly and red spider mites: Use yellow sticky traps or natural predators.

Wet Weather Adaptations

  • Improve drainage: Raise beds or use gravel paths to prevent waterlogging.
  • Space plants well: Improves airflow and reduces fungal diseases.