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  1. Southern Living
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  3. 15 Really Dumb Gardening Mistakes

15 Really Dumb Gardening Mistakes

Steve Bender, The Grumpy Gardener
By Steve Bender
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Learn from those Mistakes

Home Gardening Tips: Learn from those Mistakes

Every gardener who has ever planted, pruned, or watered a plant has at some time in their life done it the wrong way – even me, the Grumpy Gardener. Making mistakes is just part of being human. The trick is learning from each mistake, so unlike our government, you don’t keep doing the same dumb thing over and over again.

The following list of 15 gardening goofs, gaffes, and bonehead blunders is by no means comprehensive. There are plenty of other ways to show the world that you don’t know what you’re doing. But these are some of the more basic and common errors. So if you don’t want your neighbors thinking of you as basic and common, don’t make these mistakes.

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Overwatering Your Plant

Home Gardening Tips: Overwatering

Result

: The plant turns yellow, drops leaves, rots, or simply croaks.

Giving a plant too much water kills it faster than giving it too little. Although most plants prefer moist soil, they don’t like soggy, poorly drained soil. Waterlogged soil keeps roots from functioning properly. Because of this, overwatered plants may wilt on a sunny day from too much water, not too little.

To lessen your chances of overwatering, keep track of what you water, so you don’t water the same plant 3 times a day. Separate plants that need lots of water from those that need just a little. Before you water, stick your finger about an inch deep into the soil near the base of the base to see if the soil is moist or dry.

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Planting Too Deeply

Home Gardening Tips: Planting Too Deeply

Result: The plant’s roots smother and the plant slowly dies.

Roots need air to breathe. They can’t get it when they’re buried 6 feet under. So when you plant a tree or shrub, make sure that the top of the root ball is slightly higher than the surrounding soil. To keep air from drying out the root ball, cover the top with and inch or so of mulch.Photo: Plant trees and shrubs so that root ball is slightly higher than soil. Cover with mulch to keep from drying.

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Overfertilizing

Home Gardening Tips: Overfertilizing

Result:

Your plant grows too fast, refuses to bloom or fruit, becomes susceptible to disease, and may suffer fertilizer burn. Excess nutrients pollute ground water and streams.

Fertilizer is not “plant food.” Fertilizer contains chemicals that enable leaves to make food from sunshine. Plants growing in fertile soil that contains lots of organic matter do not need frequent fertilization. Plants that are dormant or suffering from drought need no fertilizer at all.

Buy fertilizers formulated for your types of plants and apply at the rates specified on the label. Choose organic, slow-release fertilizers that work slowly over months at a time and actually improve the soil by adding organic matter.

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Not Reading the Label

Home Gardening Tips: Not Reading the Label

Result:

Impending disaster.

Yeah, reading labels is boring stuff, but it’s also essential, lest you exterminate your plants, pets, and yourself. Weed-killers won’t kill bugs and bug-killers won’t kill leaf spot, but both products could kill you if you don’t use them properly.

So read the directions carefully. They’ll tell you how much product to use, how and when to apply, what plants to use it on, and what pests it controls. And don’t ever think if one tablespoon works great, two tablespoons work even better. The result is usually the opposite.

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Spreading Weed & Feed With a Rotary Spreader

Home Gardening Tips: Spreading Weed & Feed With a Rotary Spreader

Result:

Might end up feeding the weeds.

Granular weed & feed fertilizer kills the weeds and fertilizes the grass at the same time. The problem is that most people apply it using a rotary spreader, the kind that slings the granules across the lawn. This method is highly inaccurate and may cover sidewalks and driveways, where it does no good, or the foliage of good plants you don’t want to kill.

People also apply at the wrong time. For weed & feed to work, the weeds must be actively growing in mild or warm weather, and the lawn must be wet. If the granules fall off in less than 24 hours or rain washes them off, all they do is make weeds grow faster. Instead, apply fertilizer and weed-killer separately, and use weed-killer from a ready-mix spray bottle that attaches to the end of a hose.

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Pruning Flowering Trees and Shrubs at the Wrong Time

Home Gardening Tips: Pruning Flowering Trees and Shrubs at the Wrong Time

Result:

No blooms.

Some plants make flower buds on new growth. Others make buds on growth from the previous year. Pruning at the wrong time removes flower buds – hence, no blooms.

So here’s a simple rule – prune trees and shrubs that bloom from winter through May (azalea, camellia, forsythia, quince, oakleaf hydrangea, spirea, redbud, flowering cherry) in late spring or early summer. This gives them time to make new flower buds for next year. Prune those that bloom after May (crepe myrtle, chaste tree, rose-of-Sharon, butterfly bush, peegee hydrangea, gardenia, pomegranate) in late winter or early spring. If you have any question about the right time to prune, remember this tip – the best time to prune any flowering tree or shrub is immediately after its flowers fade.

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Scalping the Lawn

Home Gardening Tips: Scalping the Lawn

Result:

A weedy lawn that needs lots of water and fertilizer.

Cutting grass down to the soil line does not mean you'll be able to mow less often. It sets the stage for a thin, weedy lawn that whines like a baby for food and water. Reducing the height of the grass by more than 1/3 in a single cutting stresses and weakens it. This provides the perfect opportunity for invading lawn weeds, such as dandelions, crabgrass, chickweed, Virginia buttonweed, and spurge, that don’t mind being scalped. It also means you have to water and fertilize like crazy in between scalpings.

Solve this problem by cutting your lawn at the highest recommended height for your type of grass. Cut Zoysia at 1-2 inches; St. Augustine at 2-4 inches; Centipede at 1-2 inches; Bermuda at 1/2-1-1/2inches; Kentucky bluegrass at 2-3 inches; and tall fescue at 2-3 inches. You’ll mow less often and have a nicer lawn.

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Mixing Together Too Many Colors

Home Gardening Tips: Mixing Together Too Many Colors

Result:

Your garden looks busy and loses impact.

You wouldn’t go to work wearing yellow earrings, red lipstick, a blue dress, and green shoes (at least, Grumpy hopes you wouldn’t). Then why plant your flower border that way? Resist the temptation to plant one flower of every color. Instead, maximize impact by planting sweeps of single colors.

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Planting Shade Trees Between the Sidewalk and Curb

Home Gardening Tips: Planting Shade Trees Between the Sidewalk and Curb

Result:

Tree roots lift and break the sidewalk.

Growing roots have incredible power and can easily crack concrete. This is guaranteed to happen if the space between your sidewalk and curb in less than 6 feet and you plant shade trees that grow big and have roots near the surface. Examples – Southern magnolia, oaks, maples, bald cypress, sycamore, sweet gum, and tulip poplar. Plant smaller, ornamental trees instead – crepe myrtle, redbud, dogwood, flowering cherry, crabapple, and orchid tree.

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Not Identifying the Bug, Fungus, or Weed Before you Spray

Home Gardening Tips: Not Identifying the Bug, Fungus, or Weed Before you Spray

Result:

You make the problem worse.

Go into a home center today and you’ll find long shelves crammed with dozens of chemical problem-solvers. Not one of them controls everything. By spraying for a pest without knowing what it is, you could kill off its natural enemies without killing the pest. Or you might use the wrong product and kill the plant. So if you can’t identify a pest in your garden, take a sample to a nursery or your cooperative extension service and have them ID it for you.

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Planting in Pots Without Drainage Holes

Home Gardening Tips: Planting in Pots Without Drainage Holes

Result:

The plant drowns.

Most plants need soil that contains plenty of oxygen. There is no oxygen in soil saturated with water. And that’s what you get when you water a plant in a pot that doesn’t have a drainage hole. It’s like planting in a bathtub. So unless you’re growing aquatic plants, always check to see that pots have adequate drainage.

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Planting Trees and Shrubs in Teeny Holes

Home Gardening Tips: Planting Trees and Shrubs in Teeny Holes

Result: They grow slowly or die.

Most tree and shrub roots grow within the top foot of soil. And they grow faster in soil that’s loose and well-aerated than soil that’s hard and compacted. So when you plant, make the whole at least 3 times wider than the root ball. But don’t make it any deeper (see dumb thing #2).Photo: Correct hole size for plants.

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Buying Plants with Bugs on Them

Home Gardening Tips: Buying Plants with Bugs on Them

Result:

You bring home bugs that spread to your other plants.

Know how most people get bugs on their houseplants, flowers, and shrubs? When they buy the plants, they buy the bugs too. Garden centers and greenhouses are perfect places for bugs to multiply, because plants are so close together. Plus, they’re sprayed so often that pests become resistant. So thoroughly inspect any plant before you put it in your car. Pay special attention to flowers, flower buds, new foliage, and the undersides of leaves. Shake the plant to see if any bug flies off. If you find bugs, leave the plant there.

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Buying the Biggest-Size Shade Tree You Can Find

Home Gardening Tips: Buying the Biggest-Size Shade Tree You Can Find

Result: You pay more, but you don’t get more.

When a big tree is dug from a wholesale nursery, it leaves most of its roots at that nursery. So when you finally plant it at home, it spends the first 3 years or so replacing those roots, instead of growing new branches and leaves. A smaller tree grown in a pot, however, loses few roots and starts growing right away. In 2-3 years, it’s the same size as the tree that’s just sitting there. And it cost a lot less.Photo: Smaller trees begin growing right away.

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Mulching with Lava Rock

Home Gardening Tips: Mulching with Lava Rock

Result:

Your yard looks like the slopes of Mount Kilauea.

Lava rock? Are you kidding me? What part of Hawaii do you think you live in? Listen, this is the South. We have tornadoes, we have hurricanes, but we don’t have volcanoes. Covering your garden beds with red volcanic rock looks ugly and weird. Plus, instead of cooling the ground in summer, the way natural mulches do, it heats it up! If you want to convince your neighbors of your total lack of taste, this is perfectamundo.

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    1 of 16 Learn from those Mistakes
    2 of 16 Overwatering Your Plant
    3 of 16 Planting Too Deeply
    4 of 16 Overfertilizing
    5 of 16 Not Reading the Label
    6 of 16 Spreading Weed & Feed With a Rotary Spreader
    7 of 16 Pruning Flowering Trees and Shrubs at the Wrong Time
    8 of 16 Scalping the Lawn
    9 of 16 Mixing Together Too Many Colors
    10 of 16 Planting Shade Trees Between the Sidewalk and Curb
    11 of 16 Not Identifying the Bug, Fungus, or Weed Before you Spray
    12 of 16 Planting in Pots Without Drainage Holes
    13 of 16 Planting Trees and Shrubs in Teeny Holes
    14 of 16 Buying Plants with Bugs on Them
    15 of 16 Buying the Biggest-Size Shade Tree You Can Find
    16 of 16 Mulching with Lava Rock

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