What do you do with old potting soil?
- A tarp big enough for the amount of soil you’re working with.
- A garden rake or a hand fork if you’re okay with getting down to ground level.
- New bag of potting mix.
- A soil sieve ( available here on Amazon in regular sizes for home gardening. ...
- Perlite, Gypsum or Lime to boost the soil pH.
What can I do with my old soil?
What to Do With Old, Spent Compost
- Make new compost. Use it to make new potting soil or compost (directions below).
- Use it as mulch. Use it as a mulch on top of your flower or vegetable beds. ...
- Use it to level your garden. Use it to help even out a sloping garden or border.
- As a bottom layer. ...
- As a top layer. ...
- To grow carrots. ...
- As bedding. ...
How to make homemade potting soil?
- Start with one gallon of sterilized loam soil, commonly called garden soil and sold at garden centers, and pour it into a clean, empty bushel basket. ...
- Add one gallon of moist, coarse sphagnum peat moss, followed by one gallon of coarse sand, perlite, or vermiculite.
- Adjust the texture of the medium to create a loose, well-drained mixture. ...
What potting soils are best to use?
- BEST OVERALL: Espoma AP16 16-Quart Organic Potting Mix
- BEST VALUE: Miracle-Gro Potting Mix
- BEST HIGH-YIELD: FoxFarm Strawberry Fields Potting Soil
- BEST MOISTURE RETENTION: Miracle-Gro Expand ’n Gro Concentrated Planting Mix
- BEST NUTRIENTS: FoxFarm pH Adjusted Happy Frog Potting Soil

How long does Unused potting soil last?
How Long Can You Store Potting Soil? Opened bags of new potting soil can retain quality for around 6 to 12 months. For unopened and unused potting soil, you can store it for about a year or two before it goes bad.
Can I mix old potting soil with new?
Many gardeners simply mix used potting soil with new material, using about half of each, with a few handfuls of organic fertilizer added to boost plant nutrition. Or, you can place the old potting soil in the bottoms of very large containers, and fill the upper parts with a fresh mix.
Is dried out potting soil still good?
You can still put dried-out potting soil to good use. As long as the soil has enough nutrients in it, you can rehydrate it and use it for growing plants. To rehydrate dried-out soil, place it in a shallow tray filled with water. It might take the soil a couple of hours to absorb the water.
How often does potting soil need to be replaced?
every 12 to 18 monthsTypically, changing the soil in your potted plants should happen every 12 to 18 months. There are some exceptions that may change this timing. These include if you're moving a plant into a bigger pot because it's outgrown its current pot or if the soil has become very hard.
What do you do with old potting soil?
Old Potting Soil: What to Do With ItUse it to top existing flower and vegetable garden beds.Spread it thinly over the lawn.Dump it in newly built raised beds as a start to filling them.Add it to your compost bins.
How do you restore old potting soil?
How to Revitalize Your Old Potting Soil1 – Lay the Soil Out on a Tarp. ... 2 – Clean with Water. ... 3 – Make a 50/50 Mix. ... 4 – Test the pH and Adjust as Required. ... 5 – Add in a Slow-Release Fertilizer. ... 6 – Let it Cure.
Can you rehydrate potting mix?
You can hydrate potplant soil by placing the pot into a tub of water so that the water covers the entire pot. Add half-strength liquid fertiliser to the water, this will add nutrients back into the soil. You should notice bubbles coming to the surface, soak the pot for at least 10-20 minutes.
How do you recharge potting soil?
If the soil level has dropped, mix in potting soil or garden mix to fill the planter back up. Turn compost or fertilizer into the existing soil to add back in some much-needed nutrients.
Does Miracle Grow Potting soil expire?
The miracle grow potting soil variant comes with a shelf life of about five years, it is important to know that it contains sphagnum moss, ammonium nitrate, perlite, and compost and can go bad if compromised.
Does potting soil need to be replaced?
Potting soil doesn't need to be replaced every year. But the soil does need to be amended to ensure the dirt drains well and there are enough nutrients in the soil. Keep reading to learn how to reuse potting soil each year. Old potting soil can often become compacted and shrink away from the sides of the container.
What soil is best for indoor plants?
A good indoor potting mix is usually composed of peat moss, vermiculite and perlite. These soilless mixes absorb moisture very well and resist compaction, but they tend to dry out very quickly. Since they do not contain any nutrients, you must provide your plants with a consistent supply of fertilizer.
How long does potting mix last in pots?
around six monthsThis information will be printed on the packaging and is typically around six months. She suggests keeping an eye on the level of potting mix over time. "As it's diminishing and compacting and degrading, it will physically sink in the pot over time," she says.
Can I mix old compost with new?
Many gardeners simply mix used potting compost with new material, using about half of each, with a few handfuls of organic fertiliser added to boost plant nutrition. Or, you can place the old potting compost in the bottoms of very large containers, and fill the upper parts with a fresh mix.
How do you recharge potting soil?
If the soil level has dropped, mix in potting soil or garden mix to fill the planter back up. Turn compost or fertilizer into the existing soil to add back in some much-needed nutrients.
How do you Sterilise soil?
Steaming is considered one of the best ways to sterilize potting soil and should be done for at least 30 minutes or until the temperature reaches 180 degrees F. (82 C.). Steaming can be done with or without a pressure cooker.
Should I add more soil to a potted plant?
Over time, though, plants use up many of their soil's nutrients and organic material, says Jeana Myers, a North Carolina State horticulture extension agent. "The soil becomes depleted and hard, and won't hold water or nutrients as well." To keep your indoor plants healthy, you'll need to repot them with fresh soil.
What Is Potting Soil?
First, some basics. Potting soil is also referred to as potting mix because of the blend of components that go into a good quality potting medium. Typically, potting soil contains organic matter like peat moss, compost and worm castings; something to create air pockets and improve drainage, such as vermiculite, perlite or rice hulls; and some contain moisture-retaining crystals or coconut coir.
How to prepare potting soil for replanting?
To prepare your potting soil for replanting, Highland says to start with what’s already in the flower pot or container from the year before . “Come springtime, fluff it up,” he says. “Pull out any remaining roots or root balls. Chuck those in your compost pile .”. Highland says you will likely need to add fresh potting soil to refill the container. ...
Should You Sterilize Used Potting Soil?
No. If you’re thinking of sterilizing your soil to remove any soil-borne plant diseases, don’t. Highland warns that sterilizing soil kills beneficial microorganisms found in worm castings, compost and other organic soil amendments.
What is the purpose of enfield soil revitalizing?
Besides adding new potting soil, Enfield suggests also adding a soil-revitalizing product designed to improve old soil’s ability to hold moisture, provide needed air spaces and replenish nutrients.
How long does fertilizer last in potting soil?
Even if you use a soil mix that contains fertilizer, Keith says, “It’s important to note that those added fertilizers generally last three to six months.” Plan on adding more, depending on the needs of the plant you are growing. Annuals and veggies need the most; shrubs and plants adapted to low-fertility can get by with less.
Can potting soil be acidic?
The pH of potting soil may also change from a neutral level over time. “As peat-based soils age, they can become more acid, and some plants simply don’t like that,” Keith says. You may want to apply some garden lime or grow acid-loving plants like azaleas and blueberries in reused potting soil.
Does Potting Soil Need to Be Refreshed Before Reuse?
Yes. If you want to reuse your potting soil, you first need to improve the porosity and fertility.
What to do with old potting soil?
Here are some tips about what to do with your soil. Let used potting soil dry out, be it in pots or piled into a wheelbarrow, or even dumped on a tarp. It is easier to store pots empty and sift through the soil to remove old roots and leaves. Old potting soil needn’t be bone dry, yet it can lead to unwanted mold and microbes if it is too wet.
What to do if a plant dies from natural causes?
However, if the plant died from natural causes, you can use this soil. Depending on when you want to use it, you can find the dead plant decays and add nutrients to the soil. Bacteria and fungi help to speed up decomposition in the growing medium.
Is It Bad to Use Old Potting Soil?
While it’s fun to grow plants in containers, it can be costly in potting soil unless you deal with the old.
Does old potting soil have humus?
It will lack nutrients, yet old potting soil still has nuggets of Perlite, thin strands of humus , and hardly any weed seeds.
Can you store potting soil in plastic bags?
(Learn How Long Does Grass Seed Last) Don’ t worry about temperatures, as exposure to freezing temps is good for stored potting soil.
Does moisture retaining soil help with germination?
Such a topdressing of moisture-retaining potting soil can increase your seeded crops’ germination rates and with fewer weeds fighting for space. ( What are the Best Types Of Soil For Gardening)
Can you reuse potting soil?
There is nothing wrong with reusing potting soil, so long as you store it correctly and prepare it for use in the spring.
Can you add compost to soil?
Above: To amend the soil, you can also add compost that you blend yourself at home or purchase from a farmer friend.
Do you have to do a soil dump each spring?
Luckily, there’s no need to do a wholesale soil dump each spring. To prep the box, I used a trowel to turn my soil. Turning the soil had the dual purpose of making sure that it wasn’t invested with bugs–in which case a dump might be worth it—and making sure that the soil is light and fluffy.
Can I reuse potting soil?
The basic answer is yes, it’s possible to reuse potting soil. But first do a few things to perk it up–and replace its nutrients. Here’s how: Photography by Erin Boyle. 1. Remove old plant matter (roots, twigs, leaves). Above: I transplant spring bulbs from their nursery pots to my window box, where they will bloom.
Can you reuse potting soil in container gardening?
OK. ready to begin the soil remediation. Basic science tells us that plants use the nutrients in soil to grow. Over time, reusing the same potting soil in container gardening can deplete the nutrient stores in the soil and result in lackluster plants. Luckily, there’s no need to do a wholesale soil dump each spring.
What to do with used soil?
Toss the used soil into your compost pile and use fresh potting soil for next season to avoid damage to new plants.
What changes can you expect from potting soil?
However, potting soil contains a mixture of ingredients and is rarely stored under proper conditions, so over time, you can expect to see changes in: Texture. Nutrient levels. Mois ture content. The longer a potting soil sits, the more the organic matter breaks down.
How long does Miracle Grow soil last?
Unopened bags of Miracle Grow potting soil kept in proper storage conditions should keep for five years or more. As long as the bag stays dry, the fertilizer cannot release the nutrients.
How does Miracle Grow potting soil work?
If enough moisture gets into an open bag of Miracle Grow potting soil, the coating on the slow-release fertilizer begins to deteriorate. Within a year, the fertilizer dissolves. If plant roots aren’t present to intake the nutrients, they dissipate into the atmosphere.
Why is there mold in my potting soil?
Mold is common in potting soil since fungal spores are naturally abundant in soil and compost. White mold, called mycelium, is an indication of too much moisture, which frequently happens inside a plastic bag. Mold also means the bags didn’t have exposure to sunlight. Fresh air and sunlight kill off mold quickly.
How long does potting soil last in an open bag?
Opened Bag. Expect the quality of opened bags of potting soil to last about six months before it begins to lose beneficial features. The soil itself is almost always acceptable for general use in your garden, but potted plants won’t receive the same level of nutrients found in fresh potting soil.
Why does my potting soil smell like rotten eggs?
Rotten smell. If your potting soil smells very strong like rotten eggs, it was probably sitting in water. Bacteria in the soil quickly spreads under wet conditions. Older soil is also more dense, which removes the air pockets that keep good bacteria active. Bacteria that grow in anaerobic conditions put off quite an odor.
How long can you reuse potting soil?
Done right, you’ll be able to reuse your old potting soil for three years using crop rotation.
How much does it cost to replenish potting soil?
Every year, there’s at least $9 to $10 spent per container by gardeners to replenish their potting soil because most potting mixes contain peat-based ingredients, which break down fast.
What did you grow in it last year?
Different plants have different nutrient requirements. Heavy feeding plants include cabbage, potatoes, peppers, tomatoes, and lettuce. Light feeders are your garden peas, carrots, and most types of herbs.
How to revitalize soil?
Once the soil is cleaned and ready to be mixed, the easiest way to revitalize it is by mixing in the same amount of fresh soil potting mix to what you have already.
What plants use a lot of nutrients?
Heavier feeders of plants like tomatoes, cucumber and cabbage will use a lot of the nutrients throughout the year, causing faster nutrient depletion in the soil. Eventually, the soil levels drop and you need to top it up or replace the soil completely. Rejuvenating old potting soil is a cost-effective way to grow plants, ...
What pH should soil be for fertilizer?
You don’t want to skip this part because soil drops pH regularly, which is the reason for adding fertilizer. Use a soil pH test kit to measure the pH of existing soil. The pH of soils for growing vegetables should ideally be around 6.4 (0.2 either side of that is fine ).
How to increase pH in soil?
If it’s below 6.2, add in a sprinkling of perlite, gypsum or lime to increase the pH of the soil.
How to reuse potting soil?
Reuse your clean potting soil in containers for vegetables, flowers, houseplants, or whatever you'd like to grow. If you're not up for sterilizing and refreshing old potting soil, you still can put it to use instead of throwing it out. It can be dumped directly out of your containers and into established beds and borders. I like to use mine in my raised beds or wherever I need to fill in holes or eroded areas in my yard. It can also be mixed into compost piles. The old potting soil you reuse can help you save money for what all gardeners want: more plants.
Where to store potting soil?
If you're storing your refreshed potting soil until it's time to plant again, keep it in covered buckets or clean trash cans ($35, Walmart) or tubs with lids ($6, Target ).
How long to cook potting soil in oven?
You can also sterilize old potting soil in your oven, by baking it in an oven-safe pan, covered with foil, at 180 to 200 degrees F for 30 minutes. (I tried this once, but didn't like the earthy smell it created.)
How long to bake potting soil at 200 degrees?
You also can sterilize old potting soil in your oven. Place it in an oven-safe pan, cover with foil, and bake it at 180 to 200 degrees F for 30 minutes. (I tried this once, but didn't like the earthy smell it created.) It’s also important to check the soil temperature with a candy or meat thermometer ($21, Williams Sonoma) to make sure it stays below 200 degrees. Higher temperatures can release toxins. When it’s done, take the soil out of the oven and keep it covered until it cools.
How long to heat up potting soil?
Heat at full power for about 90 seconds per two pounds of soil.
How long does it take to sterilize soil?
It involves putting old potting soil in lidded, five-gallon buckets ($5, The Home Depot) or black plastic bags that are tightly tied shut and leaving them in the sun for four to six weeks.
How to check soil temperature?
It’s also important to check the soil temperature with a candy or meat thermometer ($20, Williams Sonoma) to make sure it stays below 200 degrees. Higher temperatures can release toxins. When it’s done, take the soil out of the oven and keep it covered until it cools. Microwaving is another option.
