Frequently Asked Questions

What does seaweed add to Maxsea?
Seaweed is nature’s wonder stuff. At Maxsea, we source only the highest-grade seaweed, which boasts more than 60 recognized elements, as well as essential vitamins, enzymes, amino acids, alginates and growth hormones all known to be beneficial to plants.

How soon will I see noticeable results after using Maxsea?
The nutrients in Maxsea are in concentrated water- soluble form that goes to work immediately. This means you’ll usually see results within a few days.

Is Maxsea an all-organic or an organic-based fertilizer?
Maxsea is an organic-based fertilizer, a blend of natural seaweed, organics, secondaries, trace elements and traditional plant foods of the highest purity. Maxsea combines the best of nature and technology for the best results. Our blend is designed to deliver the best formula for plants across the board.

Organic fertilizers can be foul smelling. What about Maxsea?
Maxsea contains no offensive fish emulsions or manures, nor does it have a harsh chemical odor. You’ll only detect the fresh, clean aroma of the sea, so our product is a pleasure to use indoors and outdoors.

Can I use Maxsea for my vegetable garden?
Yes. Maxsea is an excellent and safe fertilizer for all plants, including vegetables and other edible crops.

Can you use Maxsea in hydroponics systems?
Definitely. Hydroponics growers find Maxsea to be extraordinarily effective, easy-to-use and an economical choice for any soiless system. It supplies everything needed for optimum plant production and is pH perfect. Suggested feeding schedules and additional hydroponics information for Maxsea are available at

What is foliar feeding?
Foliar feeding means applying a diluted liquid fertilizer solution directly on the plant’s foliage where it is readily absorbed. This method should be practiced in the early morning or late afternoon when the pores of the leaves are most likely to be open, never during the heat of the day.

Can Maxsea be used with hose-end applicators, injectors and drip systems?
Yes. Instructions and application rates are on every label. We recommend making a concentrated solution and straining it through a fine sieve. Hose-end sprayers that have a siphon action and adjustable application rates are preferable to dry applicators.

Why do some Maxsea containers have extra headroom?
Maxsea is sold by weight, not volume, and each formula has a different bulk density, hence different fill levels. Containers always are filled to the weight specified on the label.

After storing Maxsea in my greenhouse, the product became damp. Is it still OK to use?
Yes. Maxsea is water-soluble and will readily absorb moisture. In moist or humid conditions, the product may become damp. This does not affect Maxsea’s effectiveness or ability to dissolve in water.

Can you combine different formulas?
Yes. Equal parts of All Purpose and Bloom products will approximate a 10-20-20 formula, which is a favorite with prize-winning rose growers and it’s also our favorite choice for mid-season use in the vegetable garden. Be sure to start with the All Purpose formula and bring the Bloom in later in the season after plants have started budding. To promote flowering in acid loving plants, like citrus, start with the Acid base and then add the Bloom formula, again after plants have started budding. We recommend 1 tablespoon of each in a 2-gallon can of water, but you don’t have to be especially exacting.

What formula should I use to perk up ailing plants?
Maxsea Acid 14-18-14, regardless of the plant’s pH preference. This is an excellent formula to give ailing plants a boost as well as correct and prevent chlorosis (yellow foliage), a common problem in citrus, gardenias and many other plants.

Is Maxsea a green company?
Our company was founded on green principles, to repurpose waste bark into orchid growing media. Today, we continue to embrace green technology in the way we run our company and how we manufacture and package Maxsea. We’ve been going green for over 40 years.

Where can I access Maxsea MSDS sheets?
Our MSDS sheets are available 24/7 on the Internet at