In this second Top 6 post Oliver will select his top 6 bomb proof plants for early summer flowers.
All images below from Crocus.co.uk
Geranium x Johnsonii (Geranium Johnson’s Blue)
Euphorbia characias subsp. wulfenii
Valerian officinalis
Persicaria bistorta ‘Superba’
Libertia grandiflora
Campanula persicfolia var. alba
Note: Always check your soil type and sunlight conditions before you buy any plant as this will determine if the plant will thrive in your garden.