If you've noticed your pansy flowers in pots have been nibbled or have disappeared, you're likely wondering what culprit is responsible. Pansies are a popular choice for container gardening due to their vibrant colors and hardiness, but they can fall prey to a variety of pests and critters. Let's delve into the most common offenders that may be eating your pansy flowers.
Insect Pests
Several insects are known to feed on pansy flowers, leaving behind telltale signs of their presence.
Caterpillars
Caterpillars, particularly those of the cabbage looper and imported cabbageworm, are fond of pansy flowers. They can defoliate plants and consume the flowers, leaving behind small, green droppings. To control caterpillars, consider using Bacillus thuringiensis var. kurstaki (Bt), a biological insecticide, or handpick them off the plants.
Aphids
Aphids are small, soft-bodied insects that suck the sap from pansy flowers and leaves. They can cause flowers to distort, wilt, or turn yellow. Ants may also be present, as they 'farm' aphids for their honeydew secretions. To manage aphids, use insecticidal soap, neem oil, or introduce natural predators like ladybugs and lacewings.
Thrips
Thrips are tiny, slender insects that feed on the undersides of pansy petals, causing them to become discolored, distorted, or silvery. They can also transmit viral diseases. To control thrips, use insecticidal soap, neem oil, or spinosad, a natural insecticide derived from soil bacteria.
Rodents and Small Mammals
While less common, rodents and small mammals like mice and voles may nibble on pansy flowers, especially in colder months when other food sources are scarce. To deter these critters, place hardware cloth or chicken wire around your pots, or use repellents containing castor oil, garlic, or putrescent egg solids.
Birds
Some birds, such as mockingbirds and grackles, may peck at pansy flowers, especially if they're looking for insects or other food sources. To protect your plants, cover them with netting or row covers, or install bird-scaring devices like reflective objects or noise makers.
Preventive Measures
To minimize damage to your pansy flowers, consider the following preventive measures:
- Choose resistant varieties, such as 'Whisky' or 'Matrix' series, which are less susceptible to pests.
- Keep your plants healthy by providing adequate water, light, and nutrients.
- Monitor your plants regularly for signs of pests or damage.
- Isolate new plants to prevent the spread of pests or diseases.
- Use physical barriers, like row covers or netting, to protect your plants.
By understanding the potential culprits and implementing preventive measures, you can help protect your pansy flowers from becoming a meal for unwanted guests. Happy gardening!