Q Will growing my tomatoes and cucumbers in greenhouse soil be more successful?
Paul Chandler, Droitwich, Worcestershire A Growing in the soil in your greenhouse will reduce the need for constant watering. Prepare the soil by digging in large quantities of well-rotted garden compost or farmyard manure prior to planting next year. The bagged processed manure from garden centres is ideal.
If you grow tomatoes and cucumbers in the same soil you’ll need to resoil after a number of years as disease problems build up. This involves digging out the old greenhouse soil to a depth of 45cm (18in) and replacing it with fresh from elsewhere in the garden.
Growing bags work well for tomatoes and cucumbers, but an exceptionally hot summer makes watering very difficult. In hot weather plants may need watering three or more times a day.
One way to tackle this is to sink bottomless 10-litre pots into growing bags and plant into them. The plants will then have a much greater volume of compost to root into, which also holds more water.
Growing tomatoes directly in the soil in the greenhouse will reduce the need for constant watering