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Hortus IBA Water Soluble Salts were developed in the US & manufactured in the Netherlands

Welcome to Hortus USA's Plant Propagation from Cuttings

Hortus IBA Water Soluble Salts

Hortus IBA Water Soluble Salts make fresh K-IBA Alcohol free rooting solutions, used by all Basal & Foliar Solution Methods

For Distributor referral and Distributor ordering, contact: Phytotronics (314-770-0717)  sales@phytotronics.com

Hummert International, 800-325-3055
Rhizopon AA #1 #2 & #3 (dry powder rooting hormones)
Hortus IBA Water Soluble Salts (for rooting solutions)

BFG SUPPLY, 800-883-0234
Hortus IBA Water Soluble Salts and Rhizopon AA - all sizes are available for on-line ordering



How Much Do I Need?

Calculate Weight of Hortus IBA Water Soluble Salts: any concentration & volume for computer screens

Calculator for small screens

Root Formation

Growers want to produce new plants which are exactly like the mother plants that are found in the home, garden, nursery or greenhouse. To produce a plant which is genetically identical to the mother plant clonal (vegetative ) propagation is needed. Propagation by the rooting of cuttings (adventitious root formation), root cuttings and division, stooling, layering, grafting and budding, and similar techniques can produce the desired clonal results. The selection of the method is dependant upon the plant variety. Propagation from seed while suitable for many plants, especially annual plants, often produce variable results. In-vitro propagation, a relatively new technique, requires specialized equipment and many times does not produce new plants as expected.

Plants propagated from cuttings have the same characteristics as the parent plant. The rapid generation of new adventitious roots is necessary for the plant to transport water and essential nutrients from the media. Rhizopon AA #1, #2 and #3, and Hortus IBA Water Soluble Salts rooting hormone treatment helps the plant to rapidly develop new roots when propagating from cuttings.

The most attractive plant is a symmetric plant. Using Rhizopon AA #1, #2 and #3, and Hortus IBA Water Soluble Salts root stimulation takes place all around the basal end of the cuttings. Rhizopon AA and Hortus IBA Water Soluble Salts products have unique formulas which induce uniform absorption of the active ingredients. After early and symmetric root formation the plant stands solid in the soil, it absorbs water and nutrients, develops uniform shoot, stem and leaf growth and superior total growth.

Lateral root formation

Micro photographs
above :
root formation

The Rhizopon bv and Hortus USA Story

In the 1930's Dutch scientists unlocked Nature's Secret to plant growth regulation of roots. They developed products and techniques that promote rooting of cuttings and increased root mass. Today the manufacturer, Rhizopon b.v. is the world's largest and oldest company solely devoted to rooting products and technology. Rhizopon and Hortus USA do plant research at their facilities in New York City, Hazerswoude, Holland, and leading research facilities including the University of Arkansas USA and the Dr. W. Kruipt Institute, Hekendorp Holland.

In the 1980's Hortus USA Corp., a US company, became the exclusive importer of Rhizopon AA #1, #2 and #3, plant rooting products. Later, adding to the product line, Hortus USA developed Hortus IBA Water Soluble Salts to allow important growers to use high water soluble concentrations of the active ingredients. Hortus USA has registered all products with the US EPA.


How to use Rhizopon AA #1, #2 and 3 dry powder rooting hormones
When you treat many different types of cuttings that require different hormone concentrations use Rhizopon AA #1, #2 and #3 dry powers, You can switch easily from one concentration to another.
When treating many small production lots Rhizopon AA #1, #2 and #3 dry powders do not need special preparation. They are ready to use.

How to use Hortus IBA Water Soluble Salts
You control the solution. You make Hortus IBA Water Soluble Salts fresh solutions for any use.
You make Hortus IBA Water Soluble Salts solutions from very dilute to extremely concentrated.
Use Hortus IBA Water Soluble Salts solutions when treating many cuttings, such as chrysanthemums, fuchsia and geranium, by Total Immerse. Totally cover the cuttings with solution in a basket then plant. You can also treat the cuttings using Spray Drip Down®. First plant the cuttings then spray the solution onto the cuttings until there is drip down. You can also quick dip the basal end of the cuttings in the solution then plant.

• Time of year considerations
The time of the year may change the method and concentration. Cuttings of the same plant variety may root better using Rhizopon AA #1, #2 and #3 powders and Hortus IBA Water Soluble Salts liquid. For example, greenwood cuttings may root better with solution treatment. Later in the growing season more woody cuttings from the same plant may root better with powder treatment.


• The need to use root promoting hormones

For adventitious rooting, all plants need plant growth regulator rooting hormones in order to produce roots on cuttings. To some extent these regulators are produced by the plant itself. Cuttings from different plant varieties and species have different ability to root. Some cuttings root easily, some are difficult to root, and some plants can not produce roots from cuttings. Rhizopon AA #1, #2 and #3, and Hortus IBA Water Soluble Salts rooting hormones act with the plants own natural rooting regulators to aid root formation. The concentration of the induced regulator hormone should be adequate to induce root development and below the threshold to inhibit growth. Successful root formation helps the cutting to take up water and nutrient substances faster.

The Methods:
Spray Drip Down® Method
Total Immerse Method
Basal Long Soak Method
Basal Quick Dip Method

Basal Dry Dip Method

• Propagation of plants by the rooting of cuttings is not a mystery

Take cuttings at the proper time from carefully selected stock plants.
Use a successful rooting method with the optimum concentration of Rhizopon AA #1, #2 and #3, and Hortus IBA Water Soluble Salts rooting hormones. Use the lowest concentration of Rhizopon AA or Hortus IBA Water Soluble Salts to do the job.
Take care of the cuttings.
Test and keep records to produce the best results and successful repeat rooting

Hortus IBA Water Soluble Salts

Hortus IBA Water Soluble Salts®
Make fresh K-IBA solutions
Measure Hortus IBA Water Soluble Salts then mix in ordinary water. US EPA Registered. Used by famous professional growers. Replaces tech IBA and K-IBA & costly alcohol premixes. You make fresh rooting solutions. Alcohol free. Dissolve in ordinary water. Always fresh.
Available in 100 gram, quarter kilo and one kilo sizes (one kilo contains 200 grams of IBA)
Contact sales@phytotronics.com or CALL 314-770-0717 (USA)

Use by the
Spray Drip Down® method: first stick cuttings in media then spray with solution until drip down.
Total Immerse method: totally immerse the cuttings in the solution a few seconds then stick in media.
Quick Dip method: dip the basal end of the cutting into solution a few seconds then stick in media.
Soak Immerse method: dip the basal end of the cutting into solution a few hours then stick in media.



Rhizopopn AA Dry Powder Rooting Hormones

Rhizopon ® AA #1, #2 and #3
Ready to use IBA rooting hormone powders in the three used concentrations
Dry powder rooting hormones. Alcohol free. Always fresh.
Available in 1 pound and 25 pound kilo sizes (full pounds not half pounds).
Unique! COLOR CODED POWDERS: each product is a DIFFERENT COLOR for easy identification

Use by the Dry Dip Method: Simply dip the base of the cutting into the powder then plant

Propation Book Use Rooting HormonesUse Rooting Hormones

Download Two Books (free):

Hortus Plant Propagation from Cuttings
A guide to using plant rooting hormones by foliar and basal methods

Use Rooting Solutions, or Not?
Multiple applications may be best



Ask your local supplier to order from Master Distributor:
314-770-0717 (USA)

Stocking Distributors including mailorder - all products, except California
For California see >>>>>>

Rhizopon AA #1 #2 & #3 (dry powder rooting hormones)
Hortus IBA Water Soluble Salts (for rooting solutions)

FRED C. GLOECKNER AND CO, 800-345-3787
Catalog (go to page 50)

Norma , NJ, 08347

888-281-9337, 217-443-0600

BFG SUPPLY, 800-883-0234
Hortus IBA Water Soluble Salts and Rhizopon AA - all sizes are available for on-line ordering

Rubonia FL 941-722-3285
Hendersonville NC 828-692-2233
Boone NC 828-264-8843


For purchases in CALIFORNIA order from local offices of
NUTRIEN AG SOLUTIONS (was called Crop Production Services)


BWI COMPANIES, 903-838-8561
DWF HORT. SUPPLY, 800-829-8280
MARION AG 800-648-2718
WILBUR ELLIS, local office - including California

HARRELLS contact your local office and request special ordering by product name, including California
For AZ, CO, NM, NV and UT: 303-746-8594

For purchases in AZ contact Chris at Harrell’s, 303-746-8594

GEMPLER'S, 800-382-8473 (USA)
608-662-3301 (outside USA)
Hortus IBA Water Soluble Salts
Order Rhizopon AA #1, #2 and #3 by name


For Distributor ordering or referral contact Master Distributor:
Phytotronics, 314-770-0717, propagation/growing supplies: phytotronics.com   sales@phytotronics.com

We Welcome Your Questions on Plant Propagation from Cuttings and Hortus IBA & Rhizopon Rooting Products: CLICK HERE to send a messag

© Hortus USA Corp. 1990-2020 All Rights Reserved. Spray Drip Down ® Method , Hortus IBA Water Soluble Salts ® and Hortus USA®  are the registered trademarks of Hortus USA Corp. Rhizopon ® is the registered trademark of Rhizopon b.v. - All Rights Reserved. -


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