Plan the perfect garden with our interactive tool →

How to Prune Torenia

The Torenia fournieri, also known as the wishbone flower is an annual bloomer which flowers in summer and fall. It originally grew in Southeast Asia--specifically the Vietnam area. Flowers range in color, depending on the variety of Torenia you plant. They are white, blue, purple, yellow and violet. As long as the plant has partial shade and the appropriate amount of water, it will grow up to 12 inches tall. The flower tends to have weak stems, so pruning torenia will help keep it strong and healthy.

Remove spent blooms as soon as they die off. Use gloved fingers to pinch off the petals. This will free up nutrients to go to other parts of the Torenia, as well as improve the annual's appearance.

  • The Torenia fournieri, also known as the wishbone flower is an annual bloomer which flowers in summer and fall.
  • The flower tends to have weak stems, so pruning torenia will help keep it strong and healthy.

Cut off the top 3 inches of Torenia's branches after flowering is complete. This will keep the plant from dropping seeds and causing additional plants to grow.

Thin out the branches to increase air and sunlight circulation. Both lessen the likelihood of disease and insect infestation. Cut off branches that are non-productive and stringy in appearance.

Prune diseased and dead branches twice per year. Wait until after they flower, then cut them off with shears where they meet healthy branches.

  • Cut off the top 3 inches of Torenia's branches after flowering is complete.
  • Thin out the branches to increase air and sunlight circulation.

Look for powdery mildew on the Torenia's leaves. It's characterized by white or gray splotches on the top of leaves and causes them to shrivel up and die. Remove the affected leaves in the fall and destroy them to avoid spreading the mildew.

Prune Torenia

Pinch back the growing tips of young plants between finger and thumb when they are a few inches high. Each pinched tip produces new, branched growth below it, resulting in a bushier plant. Water the plants well to help them recover from the pinching. Seed heads are small and don't deter reblooming.

  • Look for powdery mildew on the Torenia's leaves.
  • Water the plants well to help them recover from the pinching.

Tip

Sterilize pruning shears between cuts when pruning diseased branches. Dip the blades in a rubbing alcohol solution. This will cut down on the spread of disease to the rest of the Torenia.

Related Articles

How to Cut Back an African Violet
How to Cut Back an African Violet
Is the Lobelia Plant an Annual or a Perennial?
Is the Lobelia Plant an Annual or a Perennial?
Do Gardenias Lose Leaves in the Fall?
Do Gardenias Lose Leaves in the Fall?
Are Chinese Palm Plants Poisonous to Cats?
Are Chinese Palm Plants Poisonous to Cats?
How to Cut Back Russian Sage
How to Cut Back Russian Sage
How to Prune Canna Lilies
How to Prune Canna Lilies
How to Prune Sweet Olive Trees
How to Prune Sweet Olive Trees
The Lowest Temperature of Marigold Plants
The Lowest Temperature of Marigold Plants
Are Hibiscus Plants Poisonous to People?
Are Hibiscus Plants Poisonous to People?
How to Cut Back Black-Eyed Susans
How to Cut Back Black-Eyed Susans
How Long Is the Oat Growing Season?
How Long Is the Oat Growing Season?
Garden Guides
×