How to control common garden diseases

 7 Common garden diseases

Do your plants get weird spots and discoloration? It could be a fungal disease! Here's what you need to know to diagnose and fight these common diseases.

What are the sources of garden disease?

It is easy to find out how insects move from one plant to another. But fungal diseases? They have no wings or legs. And plants cannot sneeze or shake hands. How do these pests move so fast in a home garden? Your plants may accidentally drag a fungus home from the nursery, catch it in the blowing wind, or pick it up from a visiting bug. Keep in mind that in some years you may have a serious problem with any of these diseases and in other years it will be dormant, waiting for the right conditions to help it grow. Three things affect the development of fungal infections. Scroll down to learn more!

Pathogen

This organism finds a vulnerable plant and enters its structure. It goes inside through a scissor cut, wound or leaves, stems or roots.

Host

The plant needs a vulnerable plant to grow the pathogen. It can be a disease-prone species or simply a stressed plant.

Environment

There must be the right weather for the pathogen to grow and spread. It may require hot, cold, dry, or humid weather - it depends on the disease.

Break the cycle

The disease can only develop if all three of these factors are present. The important thing to remember is that if you can break the cycle by removing only one of these elements, your plants will be healthier. If you need some immediate solutions, here are some simple home remedies to combat fungal infections. See below for more specific information on 7 common garden pests.

Cedar-apple rust

What to look for

In autumn, you will find hard brown gallbladders on the branches of the eastern red cedar tree. In the spring the gallbladder swells and turns orange on the upper left, releasing spores. When the spores are in the foliage of an apple tree in late spring, the orange rust spots will grow on the leaves in summer, as in the photo on the right. Affected apple leaves fall off in mid-summer, leaving the tree unattended.

How cedar-apple rust spreads

Spores from the bile are released in wet spring weather and travel through the air to infect fresh apple leaves. Once they are ripe, the spores from the apple are thrown back onto the cedar and continue the cycle next year.

Check these vulnerable plants first

Eastern red cedar

Apples

Crabs

Long-distance diagnosis

It is confusing and unpredictable.

How to tame a cedar-apple pole

Do not plant eastern red cedar and apple trees in the same garden; Grow resistant varieties of apples. If you have vulnerable apple trees, spray with fungicide as a preventative measure when the flower buds begin to open.

Rust

What to look for

On either side of the leaf, you will find powdery rusty-orange or brown spots similar to those in the snapdragon above. It is most common in summer and autumn but can appear at any time.

How rust spreads

Seeds are carried by air and water to affect the plants in humid conditions.

Check these vulnerable plants first

Geranium

Asters

Moms

Snapdragon

Pioneers

Long-distance diagnosis

Rust weakens the plant and reduces flower and fruit production.

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How to control the pole

Remove and destroy the affected leaves. Try to keep the leaves dry when you water and improve air circulation around the plant by removing nearby dense vegetation. Also, read the descriptions to find resistant crops for your garden. If you want to grow a more vulnerable plant, check with a fungicide at your local garden center and you can spray it as a preventative measure in early summer.

Anthracnose

What to look for

Usually, after a cold, wet spring, irregular dark spots can be seen on the leaves. Sometimes even the buds or small branches are affected - the symptoms vary depending on the host plant. Affected parts, especially the leaves, will eventually fall off.

How anthracnose is spread

In winter spruce branches, move through the air and begin to grow in cool, humid weather.

This is easily compromised Check for deciduous plants first

Shade trees such as fig, ash, and maple

Some small ornamental trees like the dog tree in the photo above

Long-distance diagnosis

Anthracnose rarely kills the tree, but repeated leaf fall weakens the plant and makes it unpredictable.

How to control anthracnose

Plant trees in areas with good air circulation and prune dense crowns to improve wind movement. Keep the trees composted and vigorous so that they grow into new foliage quickly. When choosing a new tree, read the tags or ask for resistant crops.

What to look for

Small, moist-spotted spots usually appear in spring, on delicate fresh flower buds and flowers. But as it is in these tulips, it spreads to the leaves and stems. Fruits can also be damaged in cold, humid weather. The spots grow large and are often covered in gray.

How Potridis Gray Mold Spreads

Wind and rain spread the spores, which grow best in cool, humid climates.

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Plants that can absorb first

Botrytis can attack almost any plant with gray mold.

Long-distance diagnosis

The flower buds do not open, the fruits rot and the plant is weakened by this disease.

How to control borreliosis gray fungus

Grow plants where the air moves freely and do not wet the flowers or leaves when watering. Bury the affected plant parts 18 to 24 inches deep - do not place them in your compost pile. Many fungicides, including dichlorvos, work against this disease.