Make an acid bed
HOW would you like to eat home-grown blueberries, cranberries, lingonberries and (in sheltered spots) Chilean guavas? It’s easy to create a dedicated bed that these acid-loving crops will be happy in, and now is an ideal time to do so.
The method is easier than growing in pots, which need continual watering in dry spells. All three fruits originate from wet soils, and a dedicated bed will be far moister than individual containers.
First, identify a site free from perennial weeds (it can be in part but not full shade). Excavate a bed no smaller than 3ft (90cm) wide and a minimum of 18in (46cm) deep. Line the base with weed-control fabric or polythene (pierce this with a garden fork numerous times). Then fill up the bed with a 50:50 by volume mix of garden soil and ericaceous (acidic) compost. Fork in some sulphur chips, too – these help maintain an acidic environment.
Give your blueberries, lingonberries, guavas and cranberries a good water in their pots, then excavate and water the planting holes, too. The blueberries grow into medium-sized shrubs around 3-4ft (90-120cm) in height, whereas the others make excellent groundcover underneath. Space blueberries 3ft (90cm) apart and any groundcover 1ft (30cm) apart. Water them in well, then add a mulch of bark chips to keep weeds at bay.
Then, regular watering in dry spells and an annual top up of forked-in sulphur chips are all that’s needed.
You can easily grow blueberries and cranberries
Also, try growing lingonberries