What You Need to Know to Start a Container Garden (2024)

Gardening

Gardening Basics

Container Gardening

By

Kerry Michaels

Kerry Michaels

Kerry Michaels is a container gardening expert with over 20 years of experience maintaining container gardens in Maine. She specializes in writing and capturing photography for gardening and landscape design for print and broadcast media, including the Discovery Channel, Small Gardens, and Disney, among others.

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Updated on 07/07/22

Reviewed by

Mary Marlowe Leverette

What You Need to Know to Start a Container Garden (1)

Reviewed byMary Marlowe Leverette

Mary Marlowe Leverette is one of the industry's most highly-regarded housekeeping and fabric care experts, sharing her knowledge on efficient housekeeping, laundry, and textile conservation. She is also a Master Gardener with over 40+ years of experience and 20+ years of writing experience. Mary is also a member of The Spruce Gardening and Plant Care Review Board.

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What You Need to Know to Start a Container Garden (2)

Project Overview

  • Working Time:1 - 2 hrs
  • Total Time:1 - 2 hrs
  • Skill Level:Beginner
  • Estimated Cost:$40 to $100

Container gardening is not particularly hard. You need only four things: a container, plants, soil, and water. On the surface, it is not that different from gardening in a typical landscape garden bed. Many of the same flowers and vegetables common in a garden can also be grown in containers. Before you get started on your container garden, here are some tips to help you to keep your plants alive and looking their best.

Why Start Container Gardening?

There are many reasons why container gardening might make sense for you. For instance:

  • You can control the soil mixture, allowing you to grow plants that might not be suited to your natural garden soil. Tropicals, succulents, and other specializedplants can easily be grown in containers even if they wouldn't thrive in your soil or region.
  • You can move containers around, in effect "remodeling" your landscape whenever the mood hits. Containers can be moved around to take advantage of shifting sun patterns.
  • Prized plants can be moved indoors when the weather gets cold.
  • Container gardening allows that green thumb to thrive even if you live somewhere without a yard. Apartment dwellers can still garden!

What You'll Need

Equipment / Tools

  • Gardening trowel

Materials

  • Potting mix
  • A variety of containers
  • Plants of your choice

Instructions

What You Need to Know to Start a Container Garden (3)

  1. Choose the Right Soil

    A common mistake of container gardening starts with the soil. Some peoplethink that they can dump ordinary soil from the outdoor garden into a container to grow plants. In reality, it's best to use a specialized potting mix in your containers, not garden soil you dig up from outdoors. Once you decide what kinds of plants you want to grow, research the best soil mixture for that plant and use it. Local garden centers or home improvement stores sell a wide variety of soils and potting mixes.

    Filling a large container with soil can be expensive. If you are planting a tree or large shrub in a big urn, they need plenty of soil for the roots to expand. However, if you are planting flowering annuals with shallow roots, you can save money by adding "filler" to the bottom of the container. Use inert materials that will still promote drainage like crushed aluminum cans, non-biodegradable packing peanuts, or plastic bottles. Lay a piece of landscape cloth over the filler and top with potting soil. This will save money and lighten the weight of the container if you plan to move it around.

    What You Need to Know to Start a Container Garden (4)

  2. Choose the Right Containers

    The options for planting containers are nearly limitless. All it depends on is your imagination (and your budget). Don't overlook containers that can become hanging baskets.

    Don't overlook "found" objects around the house. Many ordinary objects, ranging from whiskey barrels to teacups, can be used as containers for plants. Make sure there is proper drainage in the container and that the soil mixture is appropriate. Be awarethat the smaller the container, the less potting mix it will hold. This makes it more critical that the soil moisture level remains correct since you'll have less room for error.

    What You Need to Know to Start a Container Garden (5)

  3. Ensure Good Drainage

    People usually worry about keeping their containers well-watered, but it can be just as big a problem to overwater them. Plants, too, can drown. Ensuring that your planters have good drainage may be the single most important thing you can do to make your container gardens healthy and long-lasting.

    Plastic pots are more prone to drowning plants than are clay pots.That's because clay "breathes" while plastic is impervious to evaporation. Whatever pot material you choose, make sure it has proper drainage holes (or add some), so the water doesn't pool in the bottom of the pot.

    What You Need to Know to Start a Container Garden (6)

  4. Select the Best Plants for a Container Garden

    The plants for container gardens can be practical (vegetables and herbs) or simply decorative like a living floral arrangement. Do you want something harmonious or dramatic? When selecting plants, think about texture, size, color, and care. When it's time to select plants, consider the following:

    Light: Vegetables and herbs need six to eight hours of sunlight each day to thrive. For decorative container gardens, choose plants that all have similar light requirements. Don't try to mix shade-loving plants and full-sun plants in one container.

    Water Requirements: Cacti and ferns in a container could be a disaster. One needs very little water and the other requires constant humidity.

    What You Need to Know to Start a Container Garden (7)

  5. Explore Examples

    A great way to get ideas for your container gardensis to look at pictures online, container gardens in your neighborhood, and home and garden magazines. You can get a lot of inspiration for plant combinations and color schemes by seeing other gardener's successes. Talk with experts at your local garden store or your gardening neighbors. They can help you create a container garden that works for your space and budget.

    What You Need to Know to Start a Container Garden (8)

6 Tips for Growing Fruit Trees in Containers

What You Need to Know to Start a Container Garden (2024)

FAQs

What You Need to Know to Start a Container Garden? ›

The general rule for watering container gardens, says Zinner, is “that you want the soil to be moist; not wet, not dry.” While she sometimes uses an inexpensive water meter, her easy trick is to put her index finger into the soil down to the second knuckle. “If I feel moisture, then the plant is happy,” she says.

How do you start a container garden for beginners? ›

Container Gardening Tips for Beginners
  1. Use the right potting mix. ...
  2. Never use soil from your yard. ...
  3. Drainage is a must. ...
  4. Don't add rocks to the bottom. ...
  5. The correct pot size matters. ...
  6. Place plants with similar needs together. ...
  7. Don't forget to water. ...
  8. Provide fertilizer.
Mar 5, 2024

What is the rule of thumb for container gardening? ›

The general rule for watering container gardens, says Zinner, is “that you want the soil to be moist; not wet, not dry.” While she sometimes uses an inexpensive water meter, her easy trick is to put her index finger into the soil down to the second knuckle. “If I feel moisture, then the plant is happy,” she says.

What is the most common mistake made with container plants? ›

One of the most common mistakes is not providing adequate drainage holes in your containers. Excess water can accumulate without proper drainage and cause root rot. Oftentimes, this leads to plant death.

How do you prepare soil for container gardening? ›

Instead, use two gallons of peat moss with two gallons of perlite or vermiculite. Then, mix them thoroughly. With either soil mix, you'll also want to add slow-release fertilizer and small amounts of limestone.

How deep should a container garden be? ›

Following are container soil depth recommendations for popular vegetables: 6" to 9" for shallow rooted vegetables: chives, lettuces, green onions, radishes, spinach. 12" to 18" for moderate depth vegetables: eggplant, peppers, beets, broccoli, carrots (short varieties), cauliflower, celery, chard, kale, peas.

How many vegetable plants per container? ›

Vegetable Container Size Chart
PlantMinimum SizeNumber of Plants Per Pot
Beans, Pole2 gallon; 8-9 inch diameter2-4
Beets1 gallon; 6-7 inch diameter3-4
Broccoli5 gallon; 12 inch diameter1
30 more rows

How often do I need to water my container garden? ›

A few more tips on containers. Early in spring when your plants are smaller and the temperatures are lower you may only have to water every 3 or 4 days. As the plants get larger and the mercury creeps higher be prepared to water every day, with small pots or water “pigs” you might even have to water twice a day.

How many plants should you put in a container? ›

Generally, using three or four plants in 10 to 12-inch planters, four to six plants in 14 to 16-inch planters and six to eight plants in 16 to 20-inch planters will fill out containers nicely while allowing room for the plants to grow without excessive crowding.

What is the best mix for container gardening? ›

2 parts compost. 2 parts peat moss. 1 part perlite or vermiculite.

What not to plant in containers? ›

Don't plant these vegetables in containers
  • Potatoes. Although it's technically possible to grow some varieties of spuds in large containers, they are better off planted in the ground.
  • Pumpkins and winter squash. ...
  • Fruit trees. ...
  • Sweet corn. ...
  • Carrots.
Jun 4, 2023

What are the disadvantages of growing plants in containers? ›

The Pros and Cons of Container Gardening
  • #1: Perfect for Small Spaces. ...
  • #2: Easy to Relocate. ...
  • #3: Fewer Weeds to Pull. ...
  • #4: Fewer Pests and Diseases. ...
  • #5: Requires Less Tools to Get the Job Done. ...
  • #1: Container Gardens Need to Be Watered More Often. ...
  • #2: Some Plants Grow Too Large for Containers.
Sep 19, 2022

What are the four main issues with container grown plants? ›

7 Container Gardening Mistakes & How to Avoid Them
  • Mistake #1: Selecting the Wrong Gardening Container. ...
  • Mistake #2: Failing to Consider Plant Requirements. ...
  • Mistake #3: Overlooking Plant Compatibility. ...
  • Mistake #4: Over or Underwatering Plants in Your Container Garden. ...
  • Mistake #5: Using Poor Quality Soil.

Can I reuse potting soil from year to year? ›

If plants died from bacterial, fungal or viral disease, then you definitely do not want to reuse the soil, as soilborne pathogens can still be present and active. However, if the plants that grew in the soil before were healthy, it is generally OK to reuse the potting soil.

Should you put rocks at the bottom of a planter? ›

Drainage holes in planters also serve a purpose, which is to allow excess water to escape. This also prevents root rot. Sabharwal notes that putting rocks in the bottom of a planter with a drain hole is unnecessary. In fact, it can actually prevent excess water from exiting, since rocks obstruct the drainage hole.

Is potting soil good for container gardening? ›

Soil taken from your yard or a garden bed is too dense to use in a pot or raised bed. Instead, for containers, you'll want to use potting mix (also called potting soil), a lightweight and fluffy alternative. For raised beds, you'll want to use a blend of potting mix and garden soil.

When should I start my container garden? ›

However, when it comes to planting, you'll want to wait until temperatures warm up at night to avoid exposure to frost. As a baseline, make sure your soil is at least 50 degrees F for cool season vegetables. For warm season crops (like tomatoes) wait until the soil is at least 60 degrees F.

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