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Encourage delphinium flowering: With these tips you can enjoy a long & rich bloom

Every amateur gardener has already seen him in the garden or at least often enviously at neighbor, friends or in photos: the magnificent delphinium virtually shines with its lush flowers in a variety of colors. But so that the flowering time actually turns out as rich as you expect, the plant needs the right care. Because the perennial is not quite so easy to care for. Perhaps you are wondering why these pretty perennials do not bloom as splendidly in your garden as they do in the garden catalog? Today, we’d like to share a few tips you can use to encourage and improve delphinium blooming. Whether you’re already a proud owner or just considering adding this colorful beauty to your garden.

Stimulate delphinium flowering – These are the things you should consider:

The right location is essential

Encourage delphinium flowering with these effective tips

If you already have the magnificent perennial in your garden, you probably already know that it prefers a sunny location, which may well vary through partial shade. You have guaranteed the plant this location, but still it does not want to work out with the lush delphinium bloom so right? Have you considered that the roots like it cooler?

Larkspur blooms with the right care

So it’s not enough to think about enough sun, you also need to make sure that the base of the plants is in the shade. So underplanting these tall growing perennials would be ideal. Lower perennials such as groundcovers are suitable, for example. Alternatively, you can look for a location under trees or taller shrubs and hedges. There delphiniums should then get a few hours of direct sunlight, while during the rest of the day they are under the protection of the shade of these plants.

Water the magnificent perennial adequately.

Delphiniums are heavy feeders and need lots of nutrients as well as site rotation

So many leaves and so many flowers… they all need adequate water, of course, so the need increases over time. And especially in summer, the risk of underwatering is very high, which you should avoid at all costs if you want to stimulate a lush delphinium bloom. This certainly means daily watering, which can be greatly facilitated by an irrigation system. In this way also once again support the need of the plant to have cool roots.

Fertilize delphinium, but properly!

Garden design with delphinium flowering - water regularly


Such a stunning bloom demands quite a bit from a plant. So it’s no surprise that delphiniums need plenty of nutrients, and especially in the spring when it sprouts new growth. Therefore, the supply begins at this time and compost is particularly suitable, but also horn meal.

Stimulate delphinium flowering with sufficient fertilizer during the flowering period

However, since these flowering plants are real heavy feeders, it is not yet done, because power through nutrients you also need for a magnificent flowering period. For this reason, also during this period, provide them with fertilizer about every three weeks, and here it is best to use a liquid fertilizer. You can reduce the frequency of fertilizer application by choosing slow-release fertilizers instead. This is because the liquid varieties are used up quite quickly.

Stimulate a second delphinium flowering by cutting the delphinium

For a rich delphinium bloom cut the plant


As beautiful as the flower has been, somehow you are already sad that it is already over? Then we’ll tell you something: you can encourage a second delphinium flowering, and for this purpose you need to cut off the old flowers. But in this you proceed quite drastically. When you cut back the delphinium, do so to a height of just 10 cm above the ground.

Pruning perennials stimulates second blooming season

Important: After that, the plant needs some time to sprout again and reach a new flowering phase. So, in order for this to happen in time, pruning should not be done too late. Cut the delphinium after flowering. You must also continue to follow or repeat the care measures already mentioned.

Propagation and/or transplanting

Divide and transplant perennials for rejuvenation

Delphinium is perennial and, with proper care, will continue to delight you with blooms in years to come. However, it is not long-lived, so you will need to add another gardening task to this, which is dividing the perennial by digging it out of the bed. But this is not all.

Perennials like sun to partial shade and cool roots

In fact, it is not advisable to plant it back to its original location. As we have already mentioned, the nutrient requirements of these perennials are extremely high, so you can expect that the supply in the soil will be pretty much exhausted after the season. And you won’t be able to make up for that even with fertilizer applications.

Therefore, find the plants a new place in the garden. Dividing is therefore necessary to rejuvenate it. Otherwise, it will only get older and weaker, which in the end will affect the variety of flowers.

In summary: This is how to improve delphinium flowering!

Choosing the right location for delphiniums

Of course, with all plants, proper care also supports growth, health and, consequently, abundant flowering. However, there are strong growers such as delphiniums, where the need is particularly high. A generous application of fertilizer even before delphinium blooms, which is continuously continued during the blooming period, as well as sufficient watering are inevitable after you have found the right location and sow delphinium. Care continues even after the flowering period with pruning if you want a second flowering, or at the latest at the end of the season, before the plant goes into hibernation and is previously dug up, divided and transplanted.

By the way, delphinium is poisonous . Keep this in mind if children or animals use your garden.