Guide category

Identification guides

Identification is a process, not a single photograph. These guides explain what to look at, when to look and which character decides the answer.

Published guides

• Identification

  Native vs Invasive Honeysuckle: The Hollow-Pith Test

  Native vs invasive honeysuckle: cut a stem and look at the pith. Invasive shrub honeysuckles are hollow; native fly and bush honeysuckle are solid.

• Identification

  Spotted Lanternfly Look-Alikes: What Else It Could Be

  Spotted lanternfly look alikes: at rest the gray, black-spotted wings sit roof-like over the back. Flat, wide wings mean a moth, not a lanternfly.

• Identification

  Spring Invasive Plants Checklist: What to Look For in March, April, May and June

  Spring invasive plants checklist: what to look for and act on each month from March through June, with links to species and removal guides.

• Identification

  Tree of Heaven Bark: How to Identify It in Winter

  Tree of heaven bark is pale gray and even, with no deep furrows. In winter, the stout twig, heart-shaped leaf scar and spongy pith settle it.

• Identification

  When Do Spotted Lanternflies Hatch? A Monthly Guide

  When do spotted lanternflies hatch? In Pennsylvania, from late April through June; in New York and Massachusetts, mostly May and June. Hatching spans weeks.