Key is to regularly water newly-planted plants, at least bimonthly for two months. It is also important to ensure you choose a location where your plant has enough space, which you can calculate from a variety's eventual height and spread.
Dig a hole twice the radius of the rootball. Before planting, drench the rootball. Place the pot in the hole, ensuring it sits no lower than an inch below ground.
Fill the hole with a mix of compost and garden soil, and add fertiliser and mycorrhizal fungi. Do not compress the soil. Give your plant a good watering. Add mulch on top whether bark and wood chippings, compost, manure, leaf-mould and stones. Make sure mulch doesn't touch the stem.
Apply fertiliser and replace decomposed mulch come spring.
Hydrangea are easy to grow, but flowering is affected by soil pH. Below we address some common queries:
- Position: hydrangea prefer full sun, but will suffice in dappled shade. If you are to plant in full sun, be sure to apply mulch, which will help trap moisture. This is important as hydrangea are quick to suffer from under watering.
- pH: Hydrangea with blue or pink flowers will change colour depending on pH, with flowers turning blue in acidic soils and pink in alkali soils. You can increase the acidity of your soil by watering with rainwater and using pine needles, conifer bark and ericaceous compost as mulch. You can increase the alkalinity by using mushroom compost as mulch or adding pulverised calcium carbonate.
- Soil Types: It is important to avoid waterlogged soils, which starve a plant of oxygen, which plays a key role in photosynthesis, cause its roots to rot and create the perfect environment for many diseases.
- Planting In Pots: planting in pots is recommended if your soil is at the wrong pH as maintaining a pH in a garden soil is challenging. Planting with ericaceous or mushroom compost will help boost acidity and alkalinity respectively. Soil nutrients will deplete over time, so adding fertiliser can help with blooms. Our nurserymen and women change the soil annually for maximum blooms.
- Hardiness: the most popular hydrangea species (macrophylla and paniculata) come from temperate regions, and are therefore well suited to the UK's climate.