Garden Soil vs. Potting Soil

Updated on May 28, 2018
Jeanne Grunert profile image

Jeanne Grunert is a Virginia Master Gardener, gardening magazine columnist, and book author. She is a full-time freelance writer.

Source

Soil Types

Garden soil or potting soil—which should you choose? The answer depends on the ultimate purpose. Each has pros and cons, and the choice of soil depends on what you are growing and where you will use it. While garden soil is free, it has many drawbacks, especially if you are using it for seed starting or transplanting house plants. Potting soil, on the other hand, can get expensive, especially if you purchase different bagged soils for various uses. Understanding garden soil vs. potting soil and when to use each type is an important aspect of gardening.

Definitions of Potting Soil and Garden Soil

Before proceeding, let's define potting and garden soil:


  • POTTING soil is a general term referring to any bagged, commercial soil product. These are the bags sitting on the shelves at your local garden center. Each bag can contain soil mixed with different additives such as compost, fertilizers, vermiculite, or other materials. Potting soil is used in POTS and containers.
  • GARDEN soil refers to any soil you can dig up from the ground. Garden soil, backyard dirt, the ground...whatever you call it, it is nature's free soil.



What Is Garden Soil?

The "dirt" in your backyard, or garden soil is actually composed of several materials. About 50% of what we call soil is solid material, and the remainder is actually open spaces between the particles, which allows air and moisture to penetrate into the soil to reach the roots of plants. The solid portion of soil contains tiny particles of various minerals and organic materials. The minerals come from rocks, which are weathered and broken down by the action of wind and rain over many years, and the organic material comes from decaying plants and animals. The open space contains about equal parts air and moisture.

Soil is measured using several factors. Garden soils are tested for pH. The pH scale ranges fro 0 to 14 and measures the acidity (closer to 0) or alkalinity (closer to 14) of the soil. An average range that many typical garden plants prefer is between 4.5 and 6 or so; some plants have specific acidity or alkalinity requirements. Soils can be tested by taking a sample to your local garden center, nursery or Cooperative Extension office. For a small fee, the soil composition, pH and other factors will be analyzed, and recommendations given to you based on what you intend to plant in the area for amendments and other materials to be added to create ideal growing conditions. The investment in a professional soil analysis is well worth the few dollars you will spend as the professional recommendations will save you time, money and effort later on, and if recommendations are followed, improve your chances of garden success.

Garden soils are generally classified as sand, loam or clay. Sand has the largest particle sizes and allows water to drain quickly. It also tends to lose nutrients quickly, too. Loam is the ideal, somewhere in the middle, with both good drainage and good fertility. Clay soils tend to retain water and lead to wet spots and compaction. Soils can be improved through the addition of natural amendments such as well-aged manures and composts.

Source

Types of Potting Soil

Not all potting soils are created equal. The basic purpose of potting soil is to provide plants with support, nutrients, moisture and air for growth and development. Potting soil generally contains a mixture of pine bark, peat moss, and either perlite or vermiculite. Pine bark is a by-product of the lumber industry and adds organic material and moisture to the mix. Peat moss is a naturally occurring moss that soaks up both water and air and releases them slowly; it can hold up to 20 times its weight in water. Perlite added to soil mixtures enhances drainage, while vermiculite, a naturally occurring mineral, helps retain moisture and nutrients. It is very useful in house plant potting soil mixes.

Whenever you purchase bags of potting soil, be sure to purchase soils marked "sterile." One of the drawbacks of using garden soil indoors is the chance for bacteria and fungi to grow and harm your house plants or seedlings. Another drawback is the potential presence of insect eggs or hibernating insects in garden soil. If such soil is brought into the warm indoor temperatures of the average house, the insects can hatch or awaken, causing an unpleasant infestation. Sterile potting soil has been heat-treated to kill all types of unwanted pests.

There are several types of potting soil:

  • Seed starting mix - these are generally lighter and fluffier than other soils, allowing tiny seeds an easy pathway to put down roots.
  • General house plant soil - may or may not be mixed with fertilizer particles. A good all-purpose potting soil.
  • Orchid mix - contains bark suitable for many types of orchids.
  • Cactus soil - contains sand and mimics soils found in cacti's native environment

A simple recipe for potting soil is to mix equal parts of peat moss, perlite, and sterilized garden soil together.

Choosing Bagged Potting Soil

Now that you understand potting soil vs garden soil, it's time to choose bagged potting soil for your needs. Bagged potting soil must be both functional and economical. You don't want to spend a fortune on it, but you do want to make sure you buy the right type for your needs. Avoid bagged potting soils that are excessively heavy. These soils are either filled with extra sand, which adds weight, or water has entered the bag. Water in and of itself won't harm the soil, but it will make the bag soggy and hard to handle. It also created an environment where bacteria can breed, and the fact that water has entered the bag indicates that the soil is no longer sterile.

Types of soil.
Types of soil. | Source

When to Use Potting Soil vs. Garden Soil

Uses
Potting Soil
Garden Soil
Seed Starting
Use potting soil marked for seed starting.
Do not use without sterilizing; may contain bacteria and fungi that can kill seedlings.
House Plants
Use soil marked for each type of plant such as cacti, African violets, others.
Do not use for house plants. May contain insect eggs that can hatch inside the home.
Container Gardening
Suitable for outdoor container gardening.
Suitable for outdoor container gardening.

Good Soil Makes for Good Plants

Potting soil vs garden soil has various advantages and disadvantages. In general, if you're starting seeds indoors or transplanting house plants, a sterile potting soil mixture is best. If you're potting up containers for an outdoor container garden or window boxes, you can probably use plain old garden soil.

Good soil makes for good plants. A rich, well drained, fertile soil helps plants grow big and strong, and that translates into abundant vegetables and flowers for your garden or beautiful blooming house plants. Starting plants off in the right kind of soil gives them a boost and helps them remain healthy.

Use bagged potting soil for house plants.
Use bagged potting soil for house plants. | Source

© 2013 Jeanne Grunert

Comments

Submit a Comment

  • Jeanne Grunert profile image
    Author

    Jeanne Grunert 4 years ago from Virginia

    You definitely have challenges with soil in Florida. I grew up on Long Island (also a beach-ocean area) and some of the soil there is really sandy. Compost and fertilizer are your friends, and decaying logs are excellent. In bog areas, decaying logs are called nurse logs because they act as nurseries for baby plants. Thanks for your comment!

  • chefsref profile image

    Lee Raynor 4 years ago from Citra Florida

    I've been doing a lot of gardening and starting plants indoors in potting soil under grow lights to avoid the vicissitudes of weather here in Fl.

    Interestingly I find the best soil mix I have outside is from decaying oak tree trunks. The long decayed logs have the texture of peat moss but has great fertility. I spread some in one row of my veg garden and that row grew 3 times as large as the other rows. Florida soil is almost beach sand, very little organic matter in it so I've been trying to improve my soil with legumes, compost and fertilizer.

working

This website uses cookies

As a user in the EEA, your approval is needed on a few things. To provide a better website experience, dengarden.com uses cookies (and other similar technologies) and may collect, process, and share personal data. Please choose which areas of our service you consent to our doing so.

For more information on managing or withdrawing consents and how we handle data, visit our Privacy Policy at: "https://dengarden.com/privacy-policy#gdpr"

Show Details
Necessary
HubPages Device IDThis is used to identify particular browsers or devices when the access the service, and is used for security reasons.
LoginThis is necessary to sign in to the HubPages Service.
Google RecaptchaThis is used to prevent bots and spam. (Privacy Policy)
AkismetThis is used to detect comment spam. (Privacy Policy)
HubPages Google AnalyticsThis is used to provide data on traffic to our website, all personally identifyable data is anonymized. (Privacy Policy)
HubPages Traffic PixelThis is used to collect data on traffic to articles and other pages on our site. Unless you are signed in to a HubPages account, all personally identifiable information is anonymized.
Amazon Web ServicesThis is a cloud services platform that we used to host our service. (Privacy Policy)
CloudflareThis is a cloud CDN service that we use to efficiently deliver files required for our service to operate such as javascript, cascading style sheets, images, and videos. (Privacy Policy)
Google Hosted LibrariesJavascript software libraries such as jQuery are loaded at endpoints on the googleapis.com or gstatic.com domains, for performance and efficiency reasons. (Privacy Policy)
Features
Google Custom SearchThis is feature allows you to search the site. (Privacy Policy)
Google MapsSome articles have Google Maps embedded in them. (Privacy Policy)
Google ChartsThis is used to display charts and graphs on articles and the author center. (Privacy Policy)
Google AdSense Host APIThis service allows you to sign up for or associate a Google AdSense account with HubPages, so that you can earn money from ads on your articles. No data is shared unless you engage with this feature. (Privacy Policy)
Google YouTubeSome articles have YouTube videos embedded in them. (Privacy Policy)
VimeoSome articles have Vimeo videos embedded in them. (Privacy Policy)
PaypalThis is used for a registered author who enrolls in the HubPages Earnings program and requests to be paid via PayPal. No data is shared with Paypal unless you engage with this feature. (Privacy Policy)
Facebook LoginYou can use this to streamline signing up for, or signing in to your Hubpages account. No data is shared with Facebook unless you engage with this feature. (Privacy Policy)
MavenThis supports the Maven widget and search functionality. (Privacy Policy)
Marketing
Google AdSenseThis is an ad network. (Privacy Policy)
Google DoubleClickGoogle provides ad serving technology and runs an ad network. (Privacy Policy)
Index ExchangeThis is an ad network. (Privacy Policy)
SovrnThis is an ad network. (Privacy Policy)
Facebook AdsThis is an ad network. (Privacy Policy)
Amazon Unified Ad MarketplaceThis is an ad network. (Privacy Policy)
AppNexusThis is an ad network. (Privacy Policy)
OpenxThis is an ad network. (Privacy Policy)
Rubicon ProjectThis is an ad network. (Privacy Policy)
TripleLiftThis is an ad network. (Privacy Policy)
Say MediaWe partner with Say Media to deliver ad campaigns on our sites. (Privacy Policy)
Remarketing PixelsWe may use remarketing pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to advertise the HubPages Service to people that have visited our sites.
Conversion Tracking PixelsWe may use conversion tracking pixels from advertising networks such as Google AdWords, Bing Ads, and Facebook in order to identify when an advertisement has successfully resulted in the desired action, such as signing up for the HubPages Service or publishing an article on the HubPages Service.
Statistics
Author Google AnalyticsThis is used to provide traffic data and reports to the authors of articles on the HubPages Service. (Privacy Policy)
ComscoreComScore is a media measurement and analytics company providing marketing data and analytics to enterprises, media and advertising agencies, and publishers. Non-consent will result in ComScore only processing obfuscated personal data. (Privacy Policy)
Amazon Tracking PixelSome articles display amazon products as part of the Amazon Affiliate program, this pixel provides traffic statistics for those products (Privacy Policy)