Best Flower Garden Fertilizers in 2026

Get your garden going with FoxFarm Grow Big, our liquid concentrate fertilizer that supports lush vegetative growth.

FoxFarm Big Bloom Liquid Plant Food is formulated for use on all plants and can be used every time you water. OMRI Listed and Registered CDFA Organic Input Material.

FoxFarm Tiger Bloom is a phosphorus fertilizer that contains nitrogen to support vigorous growth. FoxFarm Tiger Bloom is designed to encourage abundant fruit, flower and multiple bud development.

OSMOCOTE’S HIGHEST TOTAL NUTRIENT FORMULA: NPK = 14-14-14. Favored for seasonal vegetables and perennials. Promotes strong roots as well as vigorous and bountiful above-ground growth.

OSMOCOTE’S DIRECTIONS FOR USE: 1 lb. covers 40 sq. ft. (approx. 6½’ x 6½’). Mix into 1 – 3” of soil. Applicator included. Apply to vegetable gardens and mulched areas around ornamental trees / shrubs, and raised beds.

OSMOCOTE QUALITY: Osmocote is the original slow-release plant food. Decades of rigorous field testing confirm product effectiveness with hundreds of plant species in a variety of climate and soil conditions.

FEED YOUR PLANTS: Burpee's All-Purpose Organic Plant Food is formulated to keep your plants growing and happy throughout the season. Major nutrients as well as calcium, minor nutrients, and some of the beneficial microbes that help keep the soil and plants healthy are released immediately and continue to feed your plants for up to 3 months.

FOR VEGETABLES, FLOWERS & HERBS: Use this natural plant food for seed starting, bedding plants, vegetable gardens, trees, shrubs and flower containers. OMRI labeled organic. The custom blend promotes plant growth and more blooms! Great for indoor or outdoor plants.

ORGANIC CERTIFIED: OMRI listed for organic gardening use, this plant food safely keeps your soil and plants as healthy as they can be. Easy to apply granules release essential nutrients and deliver fast-acting results for all types of plants in your home garden. Follow instructions on the bag for how much plant food to apply.

AZOMITE has been shown to improve root systems, yields and general plant vigor in a variety of applications; from field crops and orchards to lawn and garden use. AZOMITE helps remineralize nutrient-depleted soils. 100% naturally derived, AZOMITE is OMRI listed for use in organic production and farming.

Organic Trace Mineral Powder w/ 67 Essential Minerals for Your Garden Bulk Fertilizer Powder-Be Green and Grow Your Own Food. Great for blending into soil mixes, hydroponic systems, Irrigation System Injection with Agitation, Greenhouse Potting Soil, Fertilizer, Home Gardens, Potted Plants

Improves root systemsMicronized is a powder with flour-like consistency, where 90% of the particles will pass through a 200-mesh screen., yields and plant health

Down To Earth Rose & Flower Mix is a one pound box of all natural fertilizer with 4-8-4 formula and supplies nutrients for vigorous growth and sensational flowers

A special fertilizer blend that provides ample nitrogen for vigorous growth, extra phosphorus for beautiful blooms and potassium and trace elements for healthy plant stock

Great for starting edible bulbs, like garlic and onion, apply when planting your favorite new roses, bulbs, perennials and use throughout the season when new growth appears on existing plants

PROMOTES ROOTING: Rooting hormone grows new plants from cuttings.

GROW CUTTINGS: Works with most popular home, garden and greenhouse varieties.

ROOT NEW FAVORITE PLANTS: Helps African violets, roses, poinsettias, philodendrons, geraniums, coleus, woody ornamentals and more grow from cuttings.

The Flora Series is a hydroponic-based nutrient system that helps fulfill your plants’ nutrient needs at every stage of growth

Nutrients included in the Series are FloraMicro, FloraBloom, and FloraGro

FloraMicro: contains nitrogen and calcium, as well as trace minerals, which are essential for a comprehensive hydroponic plant diet

Miracle-Gro LiquaFeed Advance Starter Kit with Garden Feeder, 16 oz. Bottle of LiquaFeed All Purpose Liquid Plant Food, and Dosing Spoon

Miracle-Gro LiquaFeed All Purpose Plant Food Refill Pack, (Liquid Plant Fertilizer) 16 oz.

USE ON: Use Flower-tone organic fertilizer for flowers like annuals, perennials, and roses. Flower-tone is the perfect flower food for fresh cut flowers. Promotes abundant blooms

CONTAINS: Flower-tone is a rich blend of the finest natural & organic ingredients enhanced with our exclusive Bio-tone formula; 3-4-5 low nitrogen fertilizer analysis with 5% calcium. Flower-tone is environmentally Safe - No sludges or toxic ingredients

WHEN / HOW TO USE: Best to use Flower-tone fertilizer for roses, annuals, perennials, monthly throughout the growing season. Apply to the soil around the drip line of the plant and water thoroughly. Flower-tone is ready to use and requires no mixing

- WORM CASTINGS ORGANIC FERTILIZER – Eden’s Best worm castings are as close to 100% castings as you can get. Check out our reviews to see why our products are chosen over others.

- 100% ORGANIC – Certified and guaranteed! Our organic fertilizer for vegetable gardens, flower gardens, potted plants, and general soil builder is 100% organic and we’re proud of it!

- GROW NATURALLY – No more worrying about the harmful side effects of chemical pesticides and fertilizers. Eden’s Best earthworm castings allow you to grow flourishing plants naturally, the way nature intended.

Formulated to achieve large, dense and heavy harvests with more essential oil and resin content. That means more good looking, valuable crops for you.

TREATS 800 GALLONS OF WATER! Try Flower Fuel Today for Big and Heavy Harvests!

Use anytime during the spring, summer, or fall in flower and ornamental garden beds, around ground covers, trees, and shrubs

Prevents weeds and feeds plants in one easy step

Balanced fertilizer promotes abundant blooms, increased yields and strong root development

The information below is per-pack only

Excellent for evergreens, dogwoods, hydrangeas, magnolias and many other acid-loving trees and shrubs

Encourages vigorous root growth and lush foliage

TOMATOES AND VEGGIES: Precisely designed for use on all veggies, tomato varieties, soft fruits, and berries

DISEASE PREVENTION: Contains calcium which helps prevent blossom end rot and boosts stronger cell walls, helping plants fight off disease

ORGANIC MATTER: Comprised of ingredients like bat guano, kelp meal, alfalfa meal, fish meal, and naturally occurring material that is formed when organic matter decomposes

EXTEND YOUR FLOWERS LIFE: We know floral arrangements can cost a pretty penny! Enjoy your beautiful bouquet up to 60% longer with Chrysal’ Clear Floral Food Packets! Allows a vase life guarantee of over 7 days.

NOURISH YOUR FLORAL ARRANGEMENT: Our flower food powder mixes easily and clearly in water, is odorless and provides all the necessary ingredients for full development of buds and blooms.

IDEAL FLORIST SUPPLIES: A necessary add to your floral supplies. Simply attach one packet onto the fresh cut flower arrangement so your beautiful creation can live longer (with a happy customer or client)!

NOT LIMITED TO ORCHIDS - Will also produce plants on the cane nodes of Dendrobium, Cattleya and basal nodes of Vandas. Expand your carnivorous plant collection through cloning your prized Nepenthes pitcher plant - improve the shape of a bonsai by stimulating branch production. Create clones to inexpensively grow more plants, and create homemade gifts for gardeners.

GET MORE BLOOMS - Paste can be used to stimulate more flowering branches on orchids - when orchid flowers are in bud and haven't opened, add paste to burgeon nodes directly below flower branches to encourage production of additional flowers. Water-resistant paste won't wash off in the rain or during watering chores so you can continue fertilizing your orchid mother plant like normal. Perfect for use in a greenhouse nursery with enough product for tons of applications.

COMPLETE KIT IN GIFT READY PACKAGING - Includes everything you need for your home plant science experiment - step-by-step picture booklet with detailed instructions, stunning resealable glass vial with 8 grams of paste and several wooden cotton swab applicators for a perfect orchid accessory. Unique gift for less than $15 gift the green thumb or woman or man who has everything will love. Try Keiki paste on African violets, roses, and geraniums. Not for use on food crops.

Kelp seaweed extract has long been known as one of the most effective, natural and potent ways to improve your plants. Improve resistance to stress; promote fruit and flower expansion, coloring and potency, and increase Brix! Rich concentrations of more than 70 vitamins, minerals, and enzymes helps benefit your plants and revitalize your soil media.

Sea-K Kelp is extracted from species Ascophyllum nodosum, Sargassum, Laginariausing the most advanced, low temperature enzymatic hydrolysis processes, maintaining a light brown color and highest purity of beneficial bioactive ingredients.

100% water soluble powder form suitable for any growthing system or media. Including greenhouse & outdoor drip irrigation, hydroponics, coco, peat, soil, rockwool, etc. 200g ultra concentrated bag size makes up to 400 gallons!

New Package - Same Amazing Product that Plants & Customers LOVE!

EASY & ALL PURPOSE - Simply grow healthy plants and beautiful gardens... Just add directly to seed, soil, transplant roots, existing plants, or mix with normal watering. Works for everyone, every plant, everywhere, every time!

A LITTLE GOES A LONG WAY - 1/2 lb bag makes 32+ gallons or treats up to 1,000 sf of soil or plants. Provides benefits of compost and advanced nutrition that builds healthy nutritious living soil and feeds plants continuously on-demand.

FOR ANY PLANT: Our Golden Tree formula is an all-in-one additive for any plant, tree, flower or bush. When used with a well-balanced fertilizer, Golden Tree helps improve soil/foliar nutrient conditions for better crop yields. In addition to improving overall plant nutrition, Golden Tree supports conditions for better plant establishment, nutrient uptake and abiotic stress tolerance.

GROW METHOD COMPATIBLE: No matter what grow method you’re using, Humboldts Secret Golden Tree solution will help feed growing plants. It’s designed to be compatible in all mediums - hydroponics, aeroponics, coco, DWC, soil, and every other type of growing method.

ESSENTIAL NUTRIENTS: Golden Tree can help provide essential nutrients to your garden that it isn't getting now. Our formula contains a mixture of kelp, carbs and minerals. It can be used in conjunction with other additives and fertilizers or as the only additive.

Superfood for Your Soil - Dark, rich, pure, and high in organic matter, Harris Worm Castings provide long-term nourishment to your plant soil, increasing plant yield and size

Healthy Nutrients - Create a biologically active environment in your soil by introducing beneficial nutrients

Versatile - Use indoors and outdoors for trees, shrubs, lawns, flower beds, herb and vegetable gardens and more

WONDERFULLY ORGANIC - Contains premium organic ingredients that naturally feeds and promotes strong roots, vibrant flowers, and overall better long term plant vigor. Light NPK ratio is ideal to use on all potted indoor and outdoor orchid types.

FOR VIBRANT, GROWTH & BLOOMS - Made urea free to gently feed your orchid and protect your plants from root burn while encouraging vibrant leaves, spike growth, and stunning blooms and reblooms!

READY MIXED PLANT MISTER - Already pre-mixed liquid fertilizer in a convenient ready to use spray bottle. Creates a fine mist perfect for gentle weekly feedings that help your plants thrive. Simply grab and spray!

This all purpose plant food increases flower size, quantity and vibrance of color.

Ideal for use on Geraniums, Pansies, Petunias, Impatiens and more. See label for more.

For use both indoor and outdoor. Works best when used as a soil drench combined with a foliar spray.

Easy-to-use formula for flowering plants

No mixing or measuring

Feeds for 2 months

Product 1: This all-natural, non-toxic alluvial planting media is fine-grained

Product 1: Aquascape premium potting media contains no peat moss or compost and is safe for fish.

Product 1: One bag covers 432 cubic inches

Superior Liquid Plant Food - MARPHYL Marine Phytoplankton is ideal as an outdoor and indoor plant fertilizer. It's an excellent vegetable fertilizer, houseplant fertilizer, and lawn fertilizer. It's great for your garden, greenhouse, and hydroponics. Enjoy gorgeous, colorful blooms with this exceptional flower food. Enhance soil quality and watch your trees, shrubs, vines, grass, plants, flowers, and vegetables thrive.

Naturally Boost Plant Health - Marine Phytoplankton are Microalgae full of nutrients, vitamins, and minerals. It's so much more than your average liquid plant fertilizer. MARPHYL's fertilizer for indoor plants and outdoor plants, grasses, trees, flowers and more, provides an astounding array of nutritional elements. Packed with vitamins, minerals, essential fatty acids, DHA, EPA, amino acids, chlorophyll, and a vast spectrum of phytochemicals, so your lawn, garden, and greenhouses will flourish

Organic & Sustainable - Our Liquid Marine Phytoplankton Soil Enhancer is an organic, all purpose plant food that is harvested 100% naturally. It's vegan, non-toxic, non-GMO & sustainably made with no preservatives making it safe for vegetable gardening, ground water, and pets. It replenishes your soil on a regular basis to ensure the continued growth and beauty of your vegetation. Our organic plant fertilizer will meet your every need and provide a safe environment for all gardening.

🌿 VIBRANT GROWTH — Fertilizing Your Gardenia Leads to More Consistent Blooms, AND a Deeper Flower and Foliage Colors

🍎 BIG PLANTS — Filled With Essential Nutrients that Your Flowering Plant Needs to Grow Big And Strong

👨‍🍳 SPECIALLY FORMULATED — NPK and Application Instructions Are Specific To Flowering Bushes, Potted and in the Landscape

For fruiting and flowering plants.

Contains earthworm castings, bat and seabird guano.

Easy to use! Just mix with water and broadcast lightly around roses, or in flower beds.

Botanicare Hydroplex Bloom is formulated to provide nutrients that help enhance fruit, flower, and bud development in the blooming phase of a plant's life cycle

Assists in the production of essential oils and fragrance by feeding nutrients

Delivers the necessary nutrients for maximum floral yields when used with a fertilizer program

ABOUT THE PRODUCT: RAW Phosphorus contains 61% pure water Soluble Phosphate (P). This product also contains a small amount of Ammonium Nitrogen (9%) which plants can utilize during bloom. Phosphorus is particularly beneficial during the early rooting stage but also provides energy during fruit and flower production. RAW Phosphorus is ideal for boosting Phosphorus (P) levels, treating deficiencies and creating optimal recipe solutions. Works in conjunction with all nutrient and feeding programs.

RAW Phosphorus- Easily mixes into water and is completely soluble.

BENEFITS: Promotes fruit and flower production. A critical component in the storage of energy within the plant. It Promotes rooting and early plant vigor. Important to cellular division and development of new plant tissue.

RAW Potassium contains 50% Water Soluble Potash derived from potassium sulfate. This is the highest concentration of natural Water Soluble Potassium available to the home gardener. During fruiting and flowering, large amounts of potassium are used by the plant in a matter of days which can lead to potassium deficiencies. RAW Potassium is ideal for boosting Potassium levels, treating deficiencies and creating optimal recipe solutions.

RAW Potassium- Easily mixes into water and is completely soluble.

BENEFITS: Potassium is known as the Health Element. It helps maintain water and nutrient movement within the plant. Increases sap and sugar content during later stages of fruit and flower.