Today 
It's time to...
Tie greenhouse tomatoes to their supports as they grow- Feed plants with full-strength fertiliser solution once a week, or apply a more diluted feed every few days
- Apply shading paint or put up shade netting or blinds
- Open doors and vents daily, and damp down the floor every morning
- Be on the lookout for pests, including whitefly and red spider mite, and treat at once with a suitable spray or biological control
- Pot up rooted cuttings
- Pinch out the tips of cucumber sideshoots two leaves beyond a female flower
- Check potted plants every day, watering if required
- Pinch out sideshoots of tomato plants
