Helga George, PhD 
Growers typically plant resistant apple varieties to control the major pathogens in their region. What can home gardeners do to prevent the occurrence of diseases on their apple trees? Read more to discover prevention techniques, learn ways to identify common diseases of apples, and implement control methods.
If you live in a climate that tends to be hot and humid, Septoria leaf spot can be a devastating disease of tomatoes. This fungal infection can be very persistent, so you may need to use fungicides to keep it under control. Read on to learn how to prevent, identify, and control this disease in the garden.
The fungal disease purple spot produces purple lesions on asparagus spears as they emerge from the ground. It spreads from infected asparagus residue that remains in your garden. This disease can be severe in wet weather and shorten the lifespan of your plants. Read on to learn how to manage this disease.
The organisms that cause crown and root rot can live in the soil for very long periods. There are no good chemical controls for Fusarium, but there are some for Phytophthora. You can minimize the stress to your asparagus to prevent these diseases and make them more likely to survive. Read on to learn these steps.
Asparagus rust is a highly complicated fungal disease with four different stages that can invade your plants without showing symptoms until it is too late. Cultivars bred to be resistant to this pathogen often lose effectiveness over time. Read on to learn what symptoms to look for and how to treat your infected plants.
Can ingesting dracaena be harmful to cats and dogs? You will need to monitor for adverse symptoms and call the vet if your pet samples this type of houseplant, a common pick among indoor gardeners. Read on to learn more about the toxicity of dracaena to household pets, symptoms to watch out for, and care tips.
Hellebores provide color in the late winter to early spring garden with their delightful cup-shaped flowers. While they are typically trouble-free, these robust plants can occasionally suffer from infestations. Learn how to identify and control the most common hellebore pests in this guide. Read more now.
Allium leaf miners are devastating pests of garlic, onions, shallots, chives, and leeks – and can destroy an entire crop. These invasive pests are spreading rapidly throughout the mid-Atlantic and northeastern regions of the US. Learn how to identify, prevent, and control allium leaf miners in this guide. Read more now.
Hellebores provide color in the late winter to early spring landscape and are typically trouble-free. However, there are some diseases that may infect your plants, caused by fungi, water molds, and a particularly virulent virus. Learn how to identify and treat common hellebore diseases in this guide. Read more now.
Agapanthus are easygoing, robust plants that don’t typically succumb to disease. However, in some cases they may become infected by fungi and water molds, generally as a result of poor growing conditions. Learn how to diagnose and treat the most common agapanthus diseases in this guide. Read more now.
Root-knot nematodes are a threat to plants and crops worldwide. Infestations can be difficult to diagnose and control, but you can prevent the spread of the nematodes by implementing a number of cultural and organic measures. Learn how to identify, manage, and prevent a root-knot nematode infestation. Read more now.
If you’re growing hellebores and they are showing signs of disease, you’ll need to rule out hellebore black death. This incurable viral infection is characterized by black streaks on the leaves, stems, and flower bracts. Learn more about this devastating disease and how to identify it in this guide. Read more now.
Peace lilies are typically easygoing houseplants, but occasionally they may come down with a disease. Most common peace lily diseases occur in nurseries, but certain root rots can strike houseplants in loving homes. Learn more about how to protect your peace lilies from disease now in this guide. Read more now.
Amaryllis bulbs can rot for a variety of reasons, like fungal infections or insect infestation, but some can be avoided. Are you doing everything you can to ensure beautiful blooms, and growing your decorative holiday plants in the best possible conditions? Read our top tips now to ensure healthy bulbs, indoors or out.
Whether grown in a pot or in your garden, amaryllis bulbs can be attacked by the pernicious disease known as southern blight. This fungus is extremely difficult to control, so preventing it is of the utmost importance. Read on to learn how to diagnose southern blight and prevent it from attacking your plants.
Cats that have eaten peace lilies may show symptoms ranging from sudden yowling to an upset stomach. If your cat is pawing at its face after eating your houseplant, it’s important to know what to do! While less harmful than true lilies, the toxicity of this plant is not to be taken lightly. Read on to learn more.
Pumpkin plants are highly susceptible to powdery mildew, a fungal infection can affect the quality of the fruit. In severe cases, it can destroy your whole crop. However, there are treatments available and preventative measures you can take. Learn how to prevent and treat powdery mildew on your pumpkins in this guide.
The iconic flowers of the bird of paradise plant have made it a popular landscape plant in regions with warm climates. And despite their regal appearance, these plants are relatively easy to care for, and rarely succumb to pests or diseases. Read on to learn how to grow birds of paradise in your garden in Zones 9-12.