We are Washington, D.C's premier location for all of your horticultural needs.
Located at 3744 10 St. NE, Washington, D.C. ; 20017
Call us at 202-248-2483.
Open 7 days a week Mon-Fri 11-7pm
Sunday 11-6pm
We are Washington, D.C's premier location for all of your horticultural needs.
Located at 3744 10 St. NE, Washington, D.C. ; 20017
Call us at 202-248-2483.
Open 7 days a week Mon-Fri 11-7pm
Sunday 11-6pm
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$21.95
Block light from media Reflect light to plant leaves - where it's needed most Eliminate...
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$25.95
Blocks light from media - keeps moist longer Reflects light up toward plant where it's...
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$4.95
These coir briquettes by Hydro Organics / Earth Juice are comprised of a superior commercial-grade coir...
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$0.00
A Hydroponic Growing Medium. A fired-blown clay material that is sterile, lightweight that can used...
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$20.95
Aurora Innovations advanced sourcing and manufacturing produces only the highest quality and most consistent materials....
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$33.26
Aurora Innovations advanced sourcing and manufacturing produces only the highest quality and most consistent materials. ...
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$76.95
FoxFarm's Big & Chunky Perlite allows for extra aeration and better drainage. Its larger size...
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$4.95
The Big Daddy organic CoCo Gro Bag offers a stylish way to "get growing."?̥ÌÎ_Just add...
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$18.86
Coco-Mix is an organic substrate that can be used in combination with special coco nutrients...
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$17.96
LIGHT-MIX Substrates Light-Mix is the ideal substrate for organic farmers who wish to have control...
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$10.95
This rich, loamy mix is one of the best for all gardening applications. Our 100%...
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$19.95
This rich, loamy mix is one of the best for all gardening applications. Our 100%...
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$24.95
This rich, loamy mix is one of the best for all gardening applications. Our 100%...
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$25.95
Combines coconut fibers (coir) and Canadian sphagnum peat moss to give all your outdoor container...
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$24.95
This OMRI Listed low salt organic material is just what the name implies, "Just Coir",...
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$7.15
As a soil amendment, Perlite (heat-expanded siliceous volcanic rock) is used to improve aeration and...
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$11.95
Block light from media Reflect light to plant leaves - where it's needed most Eliminate...
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$3.38
Cocogro has a very low salt content that is available in 1/2" double-sieved long fibers...
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$24.65
Cocogro is aged 18 to 24 months to avoid pH and nutrient imbalances. It has...
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$32.10
CANNA AQUA Clay Pebbles is a superior expanded clay medium. The large and porous pebbles...
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$25.00
CANNA COCO substrate has a fine, uniform structure, free from viruses and soil diseases. ...
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$15.00
CANNA, the specialist in coco production and famous for its high quality CANNA COCO has...
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$22.82
CANNA Terra Professional Plus formula was developed to fulfill the desire of creating the purest...
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$50.00
Mambo Soil Capital City Organic's first and very own super soil! A truly stellar super...
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$17.09
Roots Organics Coco Fiber has a near perfect natural pH level (5.2 - 6.3) for...
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$28.00
This Recipe has been tweaked over the years and is finally where we like it....
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$18.99
Roots Organics Coco Chips have a near perfect natural pH level (5.2 - 6.3) for...
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$26.95
Fresh water rinsed coco with no salt residue. The Root Blanket contains two 2'x2' mats....
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$0.00
An alternative to plastic covers for rockwool blocks. Use caps to help prevent light penetration...
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$0.00
An alternative to plastic covers for Rockwool blocks. Use caps to help prevent light penetration...
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$59.87
Grow Mats are designed to lie underneath Baskets, Slabs, and Cubes, and can easily be...
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$10.59
CocoTek® is pH balanced and contains low sodium content for coir fiber. It increases water...
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$1.19
CocoTek Compressed bricks are composed of low sodium coconut coir and chips. Each brick will...
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$46.35
Made from natural coconut fibers and bound by organic latex, CocoTek Mats are designed to...
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$1.24
CocoTek Compressed bricks are composed of low sodium coconut coir and chips. Each brick will...
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$10.79
Roots Organics Coco Fiber has a near perfect natural pH level (5.2 - 6.3) for...
Capital City Hydronics is now closed.
We want to thank all of our customers for their support and invite you to our main location.
11am-7pm Mon-Sat ;
11am-5pm Sundays
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