Although hostas are basically grown for those beautiful leaves, there are some hosta varieties that have quite beautiful flowers. Removing these are not necessary for the health of the plant, so whether you choose to cut the flower spikes off or allow them to grow and flower is a matter of personal choice.
Hosta flowers form on long scapes that usually tower above the hosta leaf mound. The bell or funnel-shaped flowers hang down from the scapes.
Guacamole in Bloom
Reasons to Remove Scapes and Flowers
If you're trying to grow the size of your hosta, cutting off the flower stalks when you see them will divert more energy to the hosta leaves and roots, giving them the added strength to grow larger.
Quality of the Flower Bloom
Because most hostas have been bred for their beautiful leaves, the quality of the bloom is many times an afterthought. Many hosta varieties have flowers of only 2” high, and some flowers are rather bland and unattractive. Some gardeners prefer to cut the stalks as soon as they appear simply for aesthetic purposes.
If you remove the flower stems on a hosta, it will usually not flower again that season.
How to Prune the Flower Stalks
Use sharp shears and remove the stalk at the base.
Disinfect your shears in between plants with a solution of 10% bleach to 90% water to avoid the spread of any disease.
Reasons to let the Hostas Flower!
Hostas of the Hosta Plantaginea variety grow larger, showy flowers, up to 6” long. The flowers don't usually bloom until later in the summer and the open up late in the afternoon. Hence the name August Lily.
There are fragrant hosta types in the Hosta Plantaginea varieties. The strongly scented white flowers have been likened to the scent of honeysuckle. This type of hosta is also known to perform well in the summer heat. You can plant these hostas near a walkway, porch, deck or patio for fresh summer fragrance.