Grow Beyond Blog

What are these small green worms in my trees? 

The small green worms you find in your trees are called cankerworms or inchworms. Cankerworms overwinter as eggs in the top of shade trees and typically hatch at the end of March and early April.  

What do inchworms look like?  

Cankerworms can be green, brown or brown with a black stripe. They are called inchworms because of the peculiar movement they do.  

People aren’t the only ones affected by warm temperatures during the winter months, trees and shrubs are too. So, what does this mean for our plants long term?

What if plants are in bloom during a cold snap?

The buds or bloom can get frozen, but this depends on whether the buds are open or closed when a freeze happens. The damage will be greater when the flowers are open during a freeze. There are some flowers that will be okay during the cold like daffodils. However, other flowers will be zapped by the cold or start to fade away.  

Lichen on the Bark of My Tree  

What is that grayish green or sometimes yellowish stuff on the bark of my trees?  

The stuff that is often found on the bark of trees is lichens. They are unique and harmless, but some consider them to be unsightly. So, what are lichens and what is the treatment for them?

What are lichens?

Lichens on trees are a symbiotic relationship between fungus and algae. The fungus grows on the tree bark and collects moisture, which the algae need. The algae then create food from the sunlight to feed the fungus.

Wild Onions or Star-Of-Bethlehem. What is this giant weed in my lawn? 

This giant, interesting looking weed is called Star-of-Bethlehem. They are perennial weeds (return every year), in the lily family, which grow from a bulb. It may look eerily similar to wild onions or wild garlic that you will see on the lawn around the same time of year. 

What Are Fall Webworms? 

What causes thick webbing on trees?  

Is it bagworms, or tent caterpillars or some type of spider? No, it’s most likely fall webworms. The caterpillars produce a web of fine silk over the terminal ends of plants. They only feed inside the silken web, which they enlarge as they grow. The webs may become messy and not liked for aesthetic reasons, but usually don’t affect plant growth. The dry webs may hang in plants into the winter months. 

We have seen a large population of fall armyworms (caterpillars) show up on a limited number of Virginia lawns over the last few days. Offshore winds from the south have blown adult moths into our area this summer. These moths laid eggs which have now hatched into caterpillars. These caterpillars are not a common pest problem in Central Virginia but can cause significant damage to a lawn overnight. 

Landscape vs. Drastic Temperature Changes  

How does drastic changes in temperature affect my landscape plants?  

Cooler temperatures in the fall trigger plants to reduce growth and store energy for the winter.  As temperatures get closer to freezing, plants stop growing and become dormant.  By becoming dormant, plants are able to withstand cold temperatures better. A sudden cold spell in the late fall can do more damage than sustained cold temperatures in winter.  

What are clovers?  

White clover (Trifolium repens), also known as Dutch clover, is a cool-season perennial often found growing in patches along roadsides and in pastures and lawns. It is a low-growing plant with creeping stems (stolons) that produce roots and shoots at nodes (joints) along the stem, which helps the plant to spread. 

Late Fall Fertilizer  

What are the benefits to applying fertilizer in late fall?  

One main benefit to late season fertilization is it’s ability to help turf grow out of any stressors that may have occurred over the summer months, and it helps provide the necessary nutrients for new seedlings to germinate and mature.

What are the benefits to applying late fall fertilizer and weed control?

One main benefit to late season fertilization is it’s ability to help turf grow out of any stressors that may have occurred over the summer months, and it helps provide the necessary nutrients for new seedlings to germinate and mature. Late season fertilization also ensures there will be better fall and winter color, earlier spring green-up, increased shoot density, improved fall, winter, and spring root growth, getting ahead of winter annuals, and food storage reserves (carbohydrates) within the turf plant.