Soil & Mulch

Mulch is an organic or inorganic material which is spread on top of soil and has numerous applications and benefits. This basic gardening technique is well worth understanding and a few simple points will enable even the novice gardener to use it like a pro.


The first and most noticeable benefit of mulch is that it creates auniform surface between plants and trees, adding to the beauty of a garden or outdoor space. It gives a tidy and finished appearance, instantly making the area look well cared for. Color and texture can also be added with mulch.

Mulch is also used extensively to control weeds. By creating a barrier between the soil and light, weeds are given less opportunity to grow.

A layer of mulch also helps to prevent soil erosion and moisture evaporation, both vital in maintaining healthy plants.

Depending on the type of mulch, it can insulate and help maintainsoil temperature – important in winter months when sudden drops below freezing can damage the roots of unprotected plants.

Certain mulches will enrich the soil over time by adding nutrients and fiber.


The two broad categories of mulch are organic and inorganic.

Organic mulches include natural plant material such as lawn clippings, leaves, compost, bark chips, hay, straw and pine needles. Crushed nut or cocoa shell hulls are another option. Care should be taken to not use material that will create an undesirable shift in the PH of the soil beneath. For example, pine needles will add acid, which may adversely affect some plants. However, the same needles will be welcomed by acid-loving plants such as rhododendrons. Look into each option carefully, taking into consideration the plants as well as animal visitors to your garden.

Organic mulches should be renewed every 1 – 3 years.

Inorganic mulches include decorative stone, crushed rock, plastic, recycled and shredded rubber and landscape fabrics. Each has specific applications and a little research will help you decide if any of these will enhance your garden. Stone, rock and gravel can be beautiful but can alter temperatures around plants by absorbing heat during the day. Shredded rubber can last for years, but its aesthetic appeal is limited


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Bumper Crop® Organic Soil Amendment is OMRI listed.  It is super charged with Mycorrhizae, Worm Castings, Kelp Meal and Dehydrated Poultry Manure.  If you are looking for a product to give your gardens a boost, add this to your soil.  You can mix it in the whole bed or amend this soil around the root ball every time you plant your flowers and vegetables.  Available in 1 and 2 cu. ft. bags.


master-nursery-2.0-cu.-ft.-gardeners-gold-potting-soil-8090-w800Gardeners Gold® Organic Potting Soil
is OMRI listed.  It is good for all outdoor and indoor container plants.  A blend of sphagnum peat moss, composted hen manure, shellfish, perlite and very old dark bark.  It is also pH adjusted with lime as needed.  A rich, earthy blend made with natural and organic ingredients with a special water saving formula.  Available in 16 qts., I & 2 cu. ft. bags.


Quoddy Blend Lobster Compost
is the original “seafood” compost.  Made with chitin-rich lobster blended with peat humus and compost.  The result is a dark-brown, complex soil that drains well and is ideal for conditioning beds and borders.  Great for vegetables gardens.  Add to the soil when planting tomatoes, peppers, eggplants, and squash for added calcium.
Available in 1 cu. ft. bags.


Coast of Maine Castine Blend Organic Raised Bed Mix

Uses: Raised bed gardens, planter boxes and large container gardens. Grows amazing vegetables!

Coast of Maine Organic Products Castine Blend Organic Raised Bed Mix is a rich and diverse soil for growing big and healthy vegetables, herbs and flowers.  It is made with a mixture of manure compost, worm castings, lobster and kelp meals, mycorrhizae, greensand and biochar. It is ready to use straight out of the bag with no need for additional components or tilling.


Coast of Maine Wiscasset Blend Earthworm Castings

Uses: Soil conditioning, top dress indoor container plants, compost tea –  Great for vegetables!

Coast of Maine Organic Wiscasset Blend Earthworm Castings is a finely textured, supercharged vermicompost. It is a rich blend of the digested soil left behind by earthworms. This process makes the nutrients in the soil more available to plants, as well as adding improved water retention. The castings are odorless and finely textured, making it easy to top dress houseplants.

Simple rules for application:

It is tempting to lavish mulch on a surface but use restraint and don’t over mulch! Too much can be more harmful than no mulch at all. And it can be unnecessarily expensive if it is put on more heavily than required.

A depth of 2 – 4 inches is what to strive for. Distribute mulch by shovel or bucketful into beds, taking care not to drop it on plants. Spread with a rake or hoe to an even depth. Avoid piling against tree trunks as damage the tree’s health can result. Likewise, do not mulch directly around plant stems. Leave a ring of several inches so the plants and trees can breathe.

Using these simple guidelines, anyone can incorporate mulching into their gardening routine and enjoy the benefits for years to come!