AlgoPlus All-Purpose Plus Fertilizer

28 world records for flower and vegetable production

1 liter All-Purpose
Item # 09221
Instock - allow 3-5 business days for processing prior to shipment.

You simply won't believe the power of this patented formula from France. It has grown a carrot 193 inches long, a Chrysanthemum with 7,791 flowers—and the list goes on. Best of all, it's 100% mineral based, with NO harmful chemicals, NO environmental impact, NO color, and even NO odor. And if you dilute it improperly, AlgoFlash is forgiving—it won't burn out plant roots like other fertilizers can. And now the formula and packaging have both been improved for even better performance—say hello to AlgoPlus All-Purpose PLUS.

AlgoPlus works by encouraging rapid cell multiplication using the optimal ratio of 3 major elements, along with macro- and micro-nutrients. It stimulates flower and vegetable production at astounding rates, and is effective on just about everything in the garden. Try it on your roses, houseplants, perennials, and all annuals.

Recently the folks at AlgoPlus (formerly AlgoFlash) implemented improvements in both the fertilizer itself and the way it's packaged. First, they added more stable micronutrients, for even better perfromance in the garden. Next, they added an emulsifier to prevent the fertilizer from crystallizing during freezing winter temperatures in the garden shed. Finally, they designed a sturdier bottle and a leak-proof cap to prevent you from wasting one drop of this terrific plant food. AlgoFlash All-Purpose has now truly earned the designation "Plus".

Use one capful of AlgoPlus per gallon of water as a regular feed, OR 1/2 capful to spray directly onto the foliage. It contains no chlorides, no carbonates, and no sodium. A single bottle makes more than 100 gallons of solution.

AlgoPlus All-Purpose Plus Fertilizer has an analysis of 6-6-6. These numbers represent the percentage of nitrogen, phosphorus, and potassium (N-P-K) contained in this fertilizer. Nitrogen (always the first number) is important to stimulate growth rate and to "green up" the foliage so that it can process nutrients more efficiently. Phosphorus, the middle number, stimulates root growth. Potassium, the last number, stimulates flowering and fruiting. 1-liter bottle.

Review Summary
(Based on 2 Reviews)

Overall Rating: 5.0 / 5.0


Best Fertilizer
Bill C. from SC wrote on June 17, 2014

I use this fertilizer on all of my potted plants and they are beautiful. You can use it at every watering and it will not burn your plants. I use a gallon milk jug to mix it and a bottle of fertilizer makes 100 gallons. It does not foam up and it is colorless. I also start using it on my seedlings once they get up a couple of inches. Try this fertilizer and I promise you will not be disappointed.

Algroflash fertilizer
Sally from CA wrote on January 24, 2014

I've been using Algroflash for the last 20 years. It has been the best regular fertilizer I use for my vegetable and flower gardens. I have used it in Michigan and am now using it in California.

Superior Quality - Hand Grown To Perfection!


Each plant is grown to perfection and ready to take off in your garden or in your best containers; they are the absolute best quality annuals anywhere. Our wide selection includes high quality heirloom tomatoes, compact patio vegetables, exclusive combination plantings, trailing Petunias, Calibrachoas, flowering vines, and foliage plants

Exclusive Growing Media Produces Vigorous Growth

Our special blend creates the ideal density and balance of pH levels for best root development and water retention. This encourages quicker rooting, better branching, and more vigorous growth. gives them the head start they need to grow their best!

State of the Art Environmental Controls

Our greenhouses offer state-of-the-art environmental controls to ensure the health and vitality of your plants. Each plant is hand-grown and inspected by industry professionals. We’ve been growing superior plants for many decades, and we treat each with care. Regular monitoring and good old-fashioned attention to detail make Park plants far better cared for than the mass-produced trays you might find elsewhere.

Delivered in Biodegradable Elle Pots


Our 6-packs of annual plants are grown in biodegradable Elle Pots. These fabric sleeves allow air, water, and even plant roots to penetrate. The result is terrific aeration, less soil compaction, and superior root growth. Plants grown from cuttings in Elle Pots establish much more quickly, stay healthier during growth and shipping, and transplant easily into your garden or container. Each Elle Pot is approximately 2 inches long, 2 ½ inches wide, and 3 inches deep. When you order a 6-pack, you receive six Elle Pots in a unit 7 inches long, 5 inches wide, and 3 inches deep.

Garden Fresh Express Shipping at No Extra Charge

When it’s time for your plants to make their journey from our greenhouses to your doorstep, we take no chances with their health. Every plant receives Express (2-day) shipping at the more economical standard shipping rates, so that it arrives promptly, without enduring delays along the way.

Park’s Famous Guarantee


Mother Nature offers no guarantees, but we at Park Seed sure do! Here is our unequivocal guarantee and how to use it. All Park Seed products are guaranteed to be high quality, true to type, shipped properly, and to perform as advertised. If you plant has received our recommended care and doesn’t perform to your satisfaction, notify us and we will replace it free of charge or provide the cost of the product as credit toward a future purchase. If any plant was damaged in shipping, please notify us immediately at

If any annual plant does not meet your standards, contact us at within 14 days of receipt. It’s that simple.