Updated Oct 14, 2022
With eye-catching colorful blooms that extend upwards in tall spires, it’s hard to deny the unique beauty of delphinium. Growing upwards of eight feet tall, this stunning summer bloom (you’ve probably heard it referred to as larkspur), is a great way to add a colorful vertical element to your garden. It looks beautiful when mixed among other types of plants, both in a garden or as cut flowers.
While delphinium is most commonly seen in shades of blue, there are varieties that produce coral, red, pink, and yellow blooms. Well-loved by hummingbirds, delphinium can be a great choice if you’re looking to attract hummingbirds to your garden. They typically bloom twice each season, once in the early- or mid-summer and then again in the late summer or fall.
One interesting tidbit about delphinium is that they can be toxic to humans if ingested. So this is definitely a flower to leave off your summer salad. Though delphinium aren’t the simplest to grow and care for and do require a bit of attention, their dramatic beauty makes the effort well worth it.
Caring for delphinium is a bit more hands-on than with some other plants. To grow healthy, thriving delphinium, here are some tips to keep in mind:
Delphinium grow in more than 300 varieties of annuals, perennials, and biennials. Here are a few types you may want to experiment with growing in your garden.
This perennial produces delicate blue, lavender, and mauve colored blooms that are just stunning and make an excellent addition to a bouquet of cut flowers. They are also deer resistant, so great for those looking to keep critters out of a garden.
This type of delphinium is unique in that it grows lower to the ground than other varieties. Typically producing white flowers, this small variety of delphinium rarely exceeds 12 or 14 inches tall.
These are another smaller and shorter variety of delphinium that usually grows only around a foot tall. They yield delicate light pink flowers that look wonderful in rock gardens or in containers.
Often known as candle larkspur, this perennial delphinium variety usually appears in shades of deep blue or purple (but can also be red or orange) and can grow up to five feet tall.
These delphinium feature bluish or purple flowers with a contrasting white center. They can grow up to about six feet tall and prefer full sun (that is, at least six hours of direct sun each day) and well draining soil, like most other delphinium varieties.
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