If you grow tomatoes, you have almost certainly run afoul of the fungus that causes the disease known as early blight.This ubiquitous tomato disease
22.06.2023 - 05:39 / gardenerspath.com / Helga George
How to Identify and Prevent Late Blight of Tomatoes Phytophthora infestansLate blight is a serious disease that may affect tomatoes and potatoes. It can rapidly destroy entire fields and ruin a farmer’s income for the year. And it may affect crops in home gardens severely as well.
You may not realize it, but you are probably already familiar with the organism that causes late blight. Phytophthora infestans was the cause of the infamous Irish potato famine of the 1840s.
For over 200 years, this organism was thought to be a fungus, but it has since been reclassified. It is now referred to as an oomycete – also known as a water mold – thanks to its ability to thrive in wet conditions.
Late blight is terminal, and identifying the problem early is critical to containing an epidemic.
We link to vendors to help you find relevant products. If you buy from one of our links, we may earn a commission.
Though minor cases may be treated with fungicides with some degree of success, prevention is key to protect your plants from this disease.
In this article, I’ll show you how to diagnose a late blight infection, and how to limit the spread of the organism that causes it. I’ll also go over some methods to prevent an infection in the first place.
Why Late Blight Is Such a Serious ThreatThere are many different strains of this pathogen. Some can infect both tomatoes and potatoes, but others are specialized for one host or the other.
This disease can easily be introduced into gardens via infected tomato or potato plants. Once the plants have become infected, the organism can produce millions of spores in the right conditions.
Wet, humid conditions caused by rainfall, dew, fog, or sprinkler irrigation are conducive to the spread of this pathogen.
The
If you grow tomatoes, you have almost certainly run afoul of the fungus that causes the disease known as early blight.This ubiquitous tomato disease
This post may contain affiliate links, which means that I may receive a commission if you make a purchase using these links. As an Amazon Associate I earn from qualifying purchases. Late blight is not a treatable disease and it wi
Are your homegrown carrots forked, branching, twisted, or knobby? While they may make for amusing photos, these deformed vegetables can make food preparation a challenge – try turning a twisted carrot into carrot sticks!These odd-shaped vegetables can also be a sign of serious garden problems. But what causes these d
You nurture your tomato plants until you have beautiful fruit maturing on the vine.Upon closer inspection, you discover that somet
We’ve all heard about “the blight,” and some confusing and conflicting information exists. Does it live in the soil? Can you get it from your neighbor’s garden? Some say it moves up the coast during rainy periods and can travel miles in the wind. Is it a bacteria, a disease, or virus?
Chrysanthemums are tough plants that are known for being maintenance-free, and it’s hard to even imagine them dying from some disease.So when they start to look a bit sad and wilty, it’s easy to ass
Petunias are vibrant annuals with soft, delicate flowers. They smell heavenly, and we’re not the only ones who think so.Animals and insects consider these plants to
The squash bug is a pernicious insect, one of the most common and serious pests of cucurbit plants like squash and pumpkins, as well as cucumbers and melons, though typically to a lesser degree.Unfortunately, these bugs are widespread throughou
Peace lilies, Spathiphyllum spp. are easygoing houseplants that seldom suffer from disease issues when provided with the right care.In fact, they are so easy to grow that Dr. Leo
Chrysanthemums have earned their reputation as tough, maintenance-free flowers for the home garden and they’re extremely popular for this reason.If you want bright color without a lot of work or worry a
There are a lot of reasons to love bleeding hearts, but being relatively uninteresting to pests is one of the best.Maybe they taste bad or something? I’ll have to
Swiss chard is exceptionally beautiful on top of being delicious, which makes it doubly frustrating when the leaves turn up with unsightly holes or yellowing leaves.When pests attack, you need to take s