Questions and Answers about Dahlias

Posted on April 1, 2019 at 11:30 pm

Dahlias offer gardeners beauty in the form of their varying colours, number of blooms and unique shapes. From yellows to purples to rich blues and pinks, dahlias come in many varieties to be experimented with. Growing dahlia bulbs can be a rewarding and colourful experience for your garden. They are a popular UK flower to grow in gardens and courtyards, not just because of their colourful appearance, but also because they are easy to grow. They will flower for an extended period of time and will take very easily, making them a favourite amongst amateur gardeners and keen green-fingered gardeners alike.

If you haven’t grown dahlias before and you are wondering if it will be possible in your garden, here are some of the most commonly asked questions and the answers you need to know.

What do dahlias look like?

Dahlias are related to sunflowers, daisies, zinnia and chrysanthemums. They are most often described as looking most like daisies, but in a range of vibrant colours. The beauty of dahlias is in their variety; they come in many colours. So if you want to grow them, you can find a variety in a colour that you prefer.

Can you cut dahlias?

Dahlias are a popular cut flower. Once they are blooming, you can cut them for use in bouquets. Choose flowers that are just starting to open, so they will last longer. You should cut them using secateurs or scissors, horizontally across the stem. The best time of day to cut flowers for bouquets is in the morning when it’s not as warm.

When should you plant dahlias?

Dahlias grow easily, but one of the things they are sensitive to is cold soil. Make sure there is no chance of a spring frost when you plant them – don’t rush the planting process.

Where can dahlias be grown?

Different varieties of dahlias will grow well in borders or in planters. Medium dahlias might be planted in borders along with a mix of perennials. You can get smaller varieties that will grow well in planters or perhaps in window boxes. Choose a sunny spot for your flowers, as they will produce more flowers if they have enough sun – usually 6-8 hours a day is recommended for the best results.

What kind of soil do dahlias need?

If possible, choose a loamy, sandy soil. You should dig a hole that is about 6 to 8 inches deep for planting. You might want to use some compost in the soil as well, and if it isn’t a well draining soil, perhaps use some gravel in the mix.

When will dahlias begin to bloom?

It will take about eight weeks after planting bulbs for the dahlias to begin growing. They will usually start to blossom in the middle of July. Dahlias will often continue to flower after other spring and summer flowering plants, keeping your garden colourful.

Do dahlias need fertilising?

You can use a low nitrogen fertiliser to help your flowers. Use every 3-4 weeks or so, after they have flowered.

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