If you’re looking to improve your soil, you might be wondering where can i buy gypsum. This common soil amendment is widely available for purchase online and in local stores, making it easy to get what you need for your garden. Let’s talk about what gypsum is, why it’s useful, and the best places to find it.
Gypsum is calcium sulfate dihydrate, a soft mineral. For gardeners, it’s a valuable tool for improving soil structure without altering pH. It helps break up compacted clay, allowing better water infiltration and root growth. It can also supply calcium and sulfur, two essential nutrients for plant health.
Where Can I Buy Gypsum – Available For Purchase Online
Online retailers are the most convienient source for garden gypsum. You can compare products, read reviews, and have heavy bags delivered right to your door. Here are the main types of online stores to check.
Major Online Marketplaces
Websites like Amazon, Walmart.com, and eBay carry a huge range of gardening supplies. You’ll find multiple brands and bag sizes here.
- Look for brands like Espoma, Jonathan Green, or Soil Doctor.
- Always check the product description to ensure it’s labeled as agricultural or garden gypsum.
- Read customer reviews to gauge product quality and delivery experience.
Specialist Garden Centers Online
Many physical nurseries and garden chains also have robust online stores. These are great because they specialize in gardening.
- Stores like Gardener’s Supply Company, Burpee, and Stark Bro’s.
- You often get more detailed product information and gardening advice.
- They may carry pelleted gypsum, which is less dusty and easier to spread.
Agricultural and Bulk Suppliers
If you have a large area to cover, buying in bulk is cost-effective. Many farm supply stores sell online.
- Look for 40 or 50-pound bags, or even bulk deliveries by the ton.
- Companies like Tractor Supply Co. often offer in-store pickup for online orders.
- This is the best route for serious lawn renovations or large garden plots.
What to Look For When Buying Online
Not all gypsum products are created equal. Pay attention to these details before you click “add to cart.”
- Purity: Aim for a product that is at least 90% pure calcium sulfate.
- Form: It comes as a fine powder, granules, or pellets. Powder works fast but can be dusty. Pellets are cleaner to handle.
- Application Rate: The bag should clearly state how much to use per square foot. This helps you calculate how much you need.
Local Store Options for Gypsum
Sometimes you need it today. For immediate needs, check these local spots.
Home Improvement and Garden Stores
Big-box stores like Home Depot, Lowe’s, and local garden centers almost always stock gypsum in the lawn care aisle. It’s usally with the lime and other soil amendments.
Farm and Feed Stores
These stores are a fantastic and often overlooked resource. They cater to farmers but sell to everyone. You’ll find large, affordable bags here.
Landscaping Supply Yards
For truly bulk amounts, call a local landscaping material supplier. They may sell by the cubic yard, which is perfect for amending entire new gardens.
How to Apply Gypsum to Your Garden
Once you’ve got your gypsum, using it correctly is simple. Follow these steps for best results.
- Test Your Soil: A soil test is the best first step. It confirms if you have compacted clay or a calcium deficiency that gypsum can help.
- Calculate the Amount: General rates is about 20-30 pounds per 1,000 square feet for existing lawns. For heavy clay, you might use up to 40 pounds.
- Prepare the Area: For gardens, loosen the top few inches of soil. For lawns, mow short and rake to remove debris.
- Apply Evenly: Use a broadcast or drop spreader for lawns. For gardens, you can scatter by hand and then rake it in.
- Water Thoroughly: This is crucial. Water the area well to help the gypsum start dissolving and moving into the soil profile.
Common Mistakes to Avoid
Gypsum is safe, but using it incorrectly wastes time and money. Here’s what not to do.
- Don’t use it as a substitute for lime. Gypsum does not raise soil pH. If your soil is acidic, you still need lime.
- Avoid applying it to sandy soils unless a test shows a calcium deficiency. It’s not needed and can leach away.
- Don’t expect overnight miracles. Improving soil structure takes time, often over a season or two.
- Never assume more is better. Stick to the recommended application rates on the bag.
Frequently Asked Questions (FAQ)
What is the difference between gypsum and lime?
Lime (calcium carbonate) raises soil pH to reduce acidity. Gypsum (calcium sulfate) improves soil structure and adds calcium without changing pH. They solve different problems.
Can I use too much gypsum?
It’s very difficult to harm plants with gypsum, but excessive amounts are wasteful. It can also lead to a buildup of calcium, potentially affecting the availability of other nutrients like magnesium over a very long period.
How often should I apply gypsum?
For heavy clay, an annual application for 2-3 years can make a noticable difference. After that, you may only need it every few years or as indicated by a soil test.
Is all gypsum the same? What about recycled gypsum?
Agricultural gypsum is the standard. Recycled gypsum, often from drywall, must be processed to remove contaminants. Only use products specifically marketed for garden use to be safe.
Will gypsum hurt my pets or wildlife?
Gypsum is non-toxic and safe around pets and wildlife once applied. The dust can be irritating when spreading, so it’s a good idea to keep pets inside during application.
Finding gypsum is straightforward once you know where too look. Your best bet for convienience and selection is to search online at major retailers or specialty garden sites. For large projects or immediate needs, local farm and garden stores are perfect. Remember, a simple soil test is the smartest first step to ensure gypsum is the right solution for your garden’s needs. With the right product and proper application, you’ll be on your way to healthier, more workable soil.