To get even more blooms on your wisteria, there’s a secret weapon ingredient that you can add to the soil to encourage them
To get even more blooms on your wisteria, there’s a secret weapon ingredient that you can add to the soil to encourage them(Image: TonyBaggett via Getty Images)
Wisteria is a stunning plant that can transform any garden with its beautiful purple blooms. However, it’s not widely known that wisteria doesn’t only produce purple flowers; you can also cultivate magnificent white varieties for your outdoor space.
Referred to as wisteria alba, a Japanese form of the plant, gardening expert and TikTok creator Ish highlighted that this particular variety is even more impressive, as it can flower twice annually, unlike traditional wisteria, which blooms just once. Ish said: “And an even special thing about this is it doesn’t just flower once a year, it flowers twice.”
Wisteria alba develops slowly initially, but once it becomes established after two or three years, it’s an “incredibly vigorous” plant, capable of extending by one to three metres annually, reports the Mirror.
Tomato feed can help encourage a second flush of flowers during summer(Image: Getty Images)
To encourage flowering, ensure the plants are situated in a location that receives ample sunlight. However, according to Ish, the secret to achieving bigger and better wisteria alba blooms lies in using tomato feed.
Once buds begin to appear on the plant, apply a small amount of tomato feed to the soil weekly for approximately four weeks. Ish said: “As a result, with a high potash feed, it encourages these flowers to get even bigger and even more abundant, so it’s absolutely amazing.
“And if you want that second flower, what you want to do when these are done is wait for all the flower spikes to finish, cut them straight off at the base and then give it a really good fertiliser with some manure or some slow-release feed at the bottom.
“Leave it for a few months, and around about summertime, you’ll get that amazing second flush of flowers.”
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For wisteria that has already developed buds, you can stimulate flowering by applying tomato feed weekly over a four-week period. According to Ish, tomato feed boosts potassium levels in the soil, which supports the blooming process.
Ish said in a previous video: “Tomato feed massively increases the yields of flowers and vegetables. So, it’s a little secret weapon for you.”
Tomato feed contains elevated potassium levels that promote flowering and fruiting, strengthen plant resistance to disease, and improve overall yields. While particularly beneficial for wisteria, it’s equally effective for those cultivating tomatoes, peppers, cucumbers, and various other flowering species in the garden.
Beyond its potassium content, the fertiliser also provides substantial quantities of additional nutrients, including nitrogen, phosphorus and magnesium. Nitrogen supports vigorous foliage development, phosphorus promotes robust root systems, while magnesium and sulphur contribute to general plant vitality.
An additional advantage of using a high-potash fertiliser is its protective qualities against plant diseases and environmental pressures. Regarding wisteria alba pruning, it’s advisable to carry this out during late winter, typically between January and February, to maintain manageable growth.
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