Welcome to our Head Gardener’s Journal

In this monthly column, we will share technical aspects of our work and also keep you up to date about ongoing projects. If there is any topic you might want to hear more about, please ask during your next visit!

Feeding Regimes

As part of our relentless efforts to keep our plants happy, we feed them regularly, according to their specific needs.

Our ‘staple’ product is pelleted Vitax Q4, which is a general-purpose fertilizer and contains all nutrients and trace elements required for growth and flowering.

Roses and soft fruit benefit from mulching with well-rotted horse manure, generously provided by the equine members of the household (and highly appreciated by the canine members…)

Flowering shrubs are generally fed after flowering. Calcifuges, however, are fed with a slow-release fertilizer in March and then throughout the season with a seaweed/sequestered iron extract.

All borders are fed twice to keep the display going, as are clematis and roses.

Lime of magnesium benefits hepaticas as they prefer alkaline conditions. It is also applied to Iris germanica as pioneered at Sissinghurst.

Olive and citrus trees are fed weekly throughout the season, using specialist products.

Product Feb Mar Apr May Jun Jul Aug Sep
All borders Vitax Q4 YES YES
Calcifuges Slow release ericaceous fertilizer YES
Calcifuges (monthly) Seaweed plus sequestered iron YES YES YES YES YES YES
Citrus trees (weekly) Citrus Focus YES YES YES YES YES YES YES
Climbers, shrubs & fruit trees Vitax Q4 YES
Iris germanica & hepaticas Lime of magnesium YES
Iris sibirica and ensata (foliage) SB Plant Invigorator YES
Lilacs Vitax Q4 YES
Olive trees (weekly) Olive Focus YES YES YES YES YES YES YES
Philadelphus, exochorda, Osmanthus burkwoodii & delavayi Vitax Q4 YES
Roses & clematis Vitax Q4 YES YES
Roses & soft fruit Well-rotted horse manure YES