How does a blower sprayer (fogger) increases lethality? The aim of the spray is to cover all parts of the...
Hello, I’m Alexander White, a senior agronomist with 30 years of experience as a vegetable grower.
I’ve grown vegetables in nurseries, greenhouses, open fields and even soilless substrates, using organic, biological and conventional methods.
Growing your own vegetables should be rewarding, not frustrating. I share what three decades in the field have taught me, so home gardeners and small-scale growers can spot problems early and fix them with confidence. From identifying a pest or disease to choosing the right treatment, organic or conventional, you’ll find clear answers in my blog, my pictures library and my courses on Udemy.
Find Out What’s Wrong With Your Plants
Yellow leaves? Spots? Tiny insects on the undersides?
Browse symptoms and diagnostic photos to narrow down
the likely cause of your plant’s problem, then see how to treat it.
START DIAGNOSIS → Click Here
My courses on Udemy.com
Go Deeper With My Courses
Organic & Biological Pest Control for Your Vegetable Garden
Natural, safer ways to protect your plants.
Vegetable Pests, Diseases & Cures
A practical guide to chemical pesticide options, when to use them and how to do it safely.
Some links on this site are referral links. See my disclaimer.
Most Helpful Guides
Prolog
Whether you are growing for personal consumption, on a balcony, whether you have a small vegetable garden, or even if...
Safety in spraying
Whether it is you, who is spraying, or one of your employees, safety, is first. You need to cover all...
Pests and us
Most of the insects and fungus that attack vegetable plants are the same all over the world. These pests appear...
EC Meter for Hydroponics: How to Measure Nutrient Strength Correctly
The EC meter measures the amount of water soluble (mainly fertilizers). The higher the concentration of fertilizers in the irrigation...
How to Combat Pests During Growing Season: The Importance of Using Multiple Pesticides to Prevent Resistance and Maximize Yield
During the growing season, at least 2 to 5 different insects and fungus, which I will specify later, will attack...
Nitrogen Deficiency on Tomatoes: Yellow Lower Leaves and Slow Growth
In order to grow properly and produce improved and quality fruits, our plants need nutrients in the right proportions and...
Spider Mites on Tomatoes and Cucumbers? How to Control Them
Learn how to eliminate spider mites from your crops using chemical, organic and biological methods. Spider mites can infest all...
Physiological Fruit Cracking & Sunscald on Vegetables & Tomatoes? How to Control Them with Liquid Calcium Fertilizer & Shade Cloth
Sunscald – Appears when the fruit is exposed to direct strong sunlight, after being in the shade for an extended...
https://theprofarmer.com/popular-posts/white-fly-on-plants/
Although they may seem harmless, whiteflies can actually be very dangerous to your plants. They are a type of pest...
New Lawn Weeds & Grass Establishment Issues? How to Control Them with Glyphosate & Starter Fertilizer
The grass was first recognized as of aesthetic value about 2000 years ago in the Chinese empire gardens of the...
Aphids on Tomatoes and Roses? How to Control Them Organically
Let’s see first how they look and what they do. They are around 2 mm in length and are inhabiting...
Blossom End Rot & Leathery Brown Fruit on Tomatoes & Peppers? How to Control Them with Liquid Calcium Fertilizer
Blossom end rot (BER)- A common garden problem that often occurs on both green and ripe fruits of tomato, pepper...
Thrips on Tomatoes and Onions? How to Identify and Control Them
They are around 1 mm in length. They are sucking the leaves fluids and scrubbing the leaves and fruits. They...
Potato Pests & Blight on Garden Crops? How to Control Them with Neem Oil & Insecticidal Soap
Growing potatoes is a fun and rewarding experience. Potatoes are a nutritious and versatile food that can be used in...
Late Blight on Tomatoes: How to Treat It and Protect New Growth
Also called Phytophthora infestans, it is a dangerous fungus which attacks mainly tomato and potato. It spreads very fast. Attacking...
Powdery Mildew on Plants: White Powder and How to Treat It
What is that white powder on plants? It’s a white colored fungus. Its name is powdery mildew. Powdery mildew...
Maximizing Efficiency: How to Combine Pesticides to Control Multiple Crop Pests with One Spray
Dealing with pests is one of the most challenging tasks for farmers and gardeners alike. Pests can cause serious damage...
Latest Articles
Late Blight on Tomatoes: How to Treat It and Protect New Growth
Also called Phytophthora infestans, it is a dangerous fungus which attacks mainly tomato and potato. It spreads very fast. Attacking...
Best Slow Release Fertilizer for Trees and Shrubs: Spikes vs Granular
Trees & Shrubs Thrive with Slow-Release Magic!
Yellow Leaves on Plants? Iron, Zinc and Micronutrient Deficiencies Explained
Micronutrients are Essential for chemical processes, and important in plant cell systems despite their small quantity. The micro-elements are usually...
Blossom End Rot on Tomatoes and Peppers? Calcium, Magnesium & Sulfur Guide
Calcium, magnesium, and sulfur are essential plant nutrients. They are called “secondary” nutrients because plants require them in smaller quantities...
Potassium for Plants: Deficiency Signs and When to Fertilize Tomatoes
Potassium is important for maintaining overall mechanical strength in the plant, it accumulates in the fruit and has a significant...
Phosphorus for Plants: Deficiency Signs and Bloom Booster Fertilizer
Phosphorous is used by plants largely for root growth, development and in the process of seed germination. And also, in...
Nitrogen Deficiency on Tomatoes: Yellow Lower Leaves and Slow Growth
In order to grow properly and produce improved and quality fruits, our plants need nutrients in the right proportions and...
EC Meter for Hydroponics: How to Measure Nutrient Strength Correctly
The EC meter measures the amount of water soluble (mainly fertilizers). The higher the concentration of fertilizers in the irrigation...
Soil pH for Tomatoes: How to Measure, Fix It, and Why It
PH is a measure of how acidic/basic water or soil are. The range of pH extends from zero to 14....
How to Fertilize Tomatoes and Vegetables: Schedule and Best Fertilizer
Healthy development of plants depends on proper nutrition. The nutrients that plants need is taken from the soil using their...
