Showing 17–32 of 109 results
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$19.99 – $74.99Price range: $19.99 through $74.99
- Re-mineralizes soil for optimum growth
- Virtually odorless
- Improves root systems, yields and quality
- Natural occurring mineral deposit
- For all soil types
- Greenhouse potting soil and fertilizer
- Home gardens
- Potted plants
This product is OMRI-Listed for use in organic production
Please specify Granulated or Micronized 20Kg .
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$19.99 – $32.00Price range: $19.99 through $32.00
Our Bluelab KCL Storage Solution is designed specifically for use with pH Pens or pH Probes.
Storage solution is used to ensure a pH probe is kept in ideal conditions while not in use.
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$186.50
- Robust toughened-glass, spear-tip for direct root zone measurement
- Easy to clean
- Gel filled (non-refillable), low maintenance
- Double junction probe
- Waterproof cable joint
- Quality BNC connection
- Dibber included for piloting hole into tough mediums
- 2 meter / 6.56 foot standard cable
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$339.00
Features:
- Test more with a faster sensor response and direct measurements from substrates
- Multimedia friendly, for measurements
- across a range of environments
- Toughened spear tip for direct root-zone
- Simple two point calibration process with 30 day calibration indicator
- Backlit LCD display, low battery indicator, auto off function
- 2 x AAA alkaline batteries included
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$119.00
A replacement probe for Bluelab Combo and pH Meters, and Guardian Monitors.
Replace only the pH probe, not the whole meter!
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$112.00
- Specially designed to sit flat on shelving with a trough that hangs slightly over the edge.
- The trough collects runoff then directs it towards the bulkhead recess to reduce standing water.
- The 45.5” length allows trays to fit snugly inside the wire shelving units (This length allows four 10” x 20” prop flats to fit across each shelf).
- The 2×4 Rack Tray is perfect for large scale micro green or commercial propagators looking to maximize production.
Size of product will effect shipping cost.
When ordering multiples Please call us if shipping seems unreasonable
604-294-3000
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$32.00 – $98.00Price range: $32.00 through $98.00
CANNA Substra Flores A direct availability and a correct composition of nutrients play a crucial role during the plant’s blooming phase. CANNA SUBSTRA Flores stimulates the fructification and contains all the nutrients that the plant needs during this phase. Advantages of CANNA Substra Flores During the blooming phase considerable less nitrogen is needed for example,…
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$32.00 – $98.00Price range: $32.00 through $98.00
CANNA Substra Vega CANNA Substra Vega is a complete professional nutrient for the growing phase of plants. It is specially developed for growing in run-to-waste systems. In the beginning of the growing phase, the plant lays the foundation for its eventual yield. Advantages of Substra Vega Characteristics of a healthy and powerful growth are vital…
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$3.96 – $6.96Price range: $3.96 through $6.96
- Non-toxic and effective
- Contains no pesticides
- Safe around children and pets
- Easy to use
- Trap will not catch beneficial insects
A Favorite with the staff here at Jons
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$45.60
1 Liter Concentrate
Doktor Doom Formula 420 3 in 1 Crop & Plant Rescue Concentrate 1 Liter-kills spider mites & their eggs, kills aphids, suppresses powdery mildew, ideal for use up to day of harvest.
Made with 100% Organic non-gmo Canola Oil and organic surfactants.
Great Value 1 Liter makes 50 liters.
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$49.95
1 Liter Concentrate
Fantastic Spider Mite & Thrip Killer-kills adults and eggs. Use indoors-outdoors, in greenhouses on house plants and edible plants.
Great value 1 Liter Concentrate makes 50 liters.
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$19.75
Doktor Doom Spider Mite Knockout 500 Grams Doktor Doom Spider Mite Knockout For use on Ornamental Plants, Edible Plants, Trees, Shrubs and Evergreens. Many other Indoor & Outdoor uses. Kills Bed Bugs- for use on mattresses and bed frames. Container features a special valve that can be sprayed in all directions even up side down…
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$19.49
Kills on contact, repels, and provides long lasting residual control
0.025% Liquid permethrin formula
No artificial perfumes, fragrances, or attars
Use indoors & outdoors
Use on home vegetable gardens and fruit trees
On Backorder. Suppliers out
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Sale!

$53.38 Original price was: $53.38.$49.00Current price is: $49.00.
- Superior design and balance for ease of use
- High-grade injection molded plastic eliminates corrosion
- Plastic rose included
- With removable gentle rain head
- Made of recycled, non-toxic thermoplastic
- UV resistant
- Lightweight and durable
2 Left
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$27.95
This kit includes 2 fittings to allow chiller to be plumbed with 1 in hard PVC pipe or 1 in flexible tubing.
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$1,789.00
- Features a commercial-grade titanium heat exchanger
- Remote temperature controller with a 30 ft cord
- Auto restart and temperature memory
- 2 fittings to allow chiller to be plumbed with 1 in hard PVC pipe or 1 in flexible tubing.
Instructions for Commercial grade 1/2HP, 1 HP, 1.5 HP