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Harry Collins

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Harry Collins

Areas of Expertise: Plant Physiology | Container Gardening

Harry, the Why Guy

Most garden problems make sense once you know what’s causing them, and that is the part I focus on. 

I have a degree in Landscape Management and over 15 years of hands-on growing, in small city balcony containers and large perennial borders alike. 

I use basic plant science to explain why plants behave the way they do, and I keep it in plain words with steps you can actually follow.

The Questions I Answer

Most of my work starts with a why. Why gravel in a pot keeps roots wetter, why yellow leaves rarely need more fertilizer, and why saved squash seeds do not always come back the same. 

I answer those questions here in plain words, with steps that actually work.

When to Harvest Watermelon: 9 Signs It’s Ready to Pick

Watermelon does not ripen once it is off the vine. Unlike bananas or tomatoes, a melon picked too early stays exactly as underripe as the

Celosia Plant Care: Grow Bold, Colorful Blooms

I love how celosia changes a garden the moment it goes in the ground. Some varieties look like little flames. Others form strange, coral-like crowns

Determinate vs. Indeterminate: Tomato Types Decoded

I planted two tomato seedlings six inches apart one May, and by August they looked nothing alike. One was a tidy three-foot bush loaded with

How to Propagate Spider Plant: 4 Methods that Actually Work

Spider plant babies start growing roots while they are still attached to the mother plant. You just have to know where to look. Those small

How to Care for Peonies the Right Way?

My first peony sat in the ground for two years without a single bloom, and I nearly gave up on it. The seeds were buried

How to Grow Herbs Indoors: Fresh Herbs Year-Round

A dead basil plant typically results from a mismatch between its needs and environment, not bad luck. Fresh herbs year-round sound simple until the mint

How Long Do Seeds Last: Seed Shelf Life and Viability

Onion seeds are often dead within a year. Tomato seeds can still sprout after a decade in the same drawer. The date on the packet

How to Plant Ginger Root: Growing Healthy Ginger at Home

That piece of ginger in your fridge’s crisper can actually sprout into a real plant. Learning how to plant ginger root starts with something you

How to Harvest Mullein and Store it Properly?

Mullein is hard to miss once its tall stalk of yellow flowers rises above the surrounding plants. But knowing how to harvest mullein correctly is

Growing Sunflowers Needs Less Work Than You Think!

My first sunflower patch grew from three leftover seed packets and zero expectations. I stuck them along a fence, walked away, and forgot about them

How to Plant an Avocado Seed at Home?

For years I tossed my avocado pits straight into the compost bin. I had no idea what I was throwing away. Turns out growing one

How to Prevent Weeds from Growing Back Every Week?

I pulled a weed one day and watched three more show up in its place the next. For a while I chalked it up to