Best Plant Food For Lavender: Compare 10 Options

#1 · Best Overall

1. TPS NUTRIENTS Lavender Fertilizer

• Weight: 8 oz
• Form: Liquid

Best for: Lavender watering-can routine.

Why it ranks #1: Lavender-specific liquid lists fragrant blooms, steady growth, and garden or container use; directions allow mixing with water for a watering can or sprayer.

Lavender-specific liquid food supports flower development and aromatic foliage, making it a targeted choice when blooms and scent are the priorities. The 8-ounce formula suits both potted lavender and outdoor planting, so the same product can serve container plants and garden beds rather than limiting feeding to one setting.

This liquid fertilizer provides balanced nutrition for steady plant development, while its lavender-focused bloom and foliage support gives feeding a clear purpose. Mix it with water and apply by watering can or sprayer, an approach that fits ordinary watering routines and lets growers choose their preferred applicator. Its stated use for both containers and outdoor planting makes it practical across different lavender placements. Avoid contact during handling and wash hands afterward, as directed.

Skip it if you want a specified dilution rate or a precise feeding schedule; Gardenera 3-1-2 Liquid Fertilizer gives both instructions.

Choose this for lavender growers who want liquid feeding across pots and outdoor beds, with bloom and fragrance support. It fits a watering-can or sprayer routine, but the supplied directions do not state a dilution rate.

Listed on Amazon as: Lavender Fertilizer, Liquid Plant Food for Healthy Growth, 8 oz

#2 · Best Stated Dilution

2. Gardenera 3-1-2 Liquid Fertilizer

• Weight: 8 oz
• Form: Liquid

Best for: Indoor lavender concentrate users.

Why it ranks #2: Lavender-focused 3-1-2 concentrate gives a clear mixing rate of one teaspoon per gallon and directions to feed at roots during normal watering.

A stated 3-1-2 NPK ratio gives this lavender concentrate a defined nutrient balance for indoor plants and flowers. Gardenera also identifies organic ingredients, making it a focused option for indoor lavender growers who want a plant-specific liquid food and a clear root-feeding routine tied to regular watering.

The concentrate mixes at one teaspoon per gallon of water, then feeds at the roots during normal watering; that measured dilution helps establish a repeatable routine. Its stated schedule is every other watering session, so users can incorporate it into an existing indoor plant-care pattern. The 3-1-2 nitrogen, phosphorus, and potassium blend is explicitly presented for lavender, while the 8-ounce liquid format serves as a concentrated feed rather than a ready-to-apply solution.

Skip it if you want an all-purpose feed that starts working instantly; Miracle-Gro Water Soluble All Purpose Plant Food serves indoor and outdoor plants.

This suits indoor lavender growers who prefer a lavender-labeled concentrate and a measured root-feeding schedule. It requires dilution and feeding every other watering session, so it is less suited to anyone seeking a ready-to-apply product.

Listed on Amazon as: Premium Liquid Lavender Plant Fertilizer – 3-1-2 Concentrate for Indoor Plants and Flowers by Gardenera | Organic Plant Food for Lavenders – 8oz

#3 · Best Kelp Formula

3. GARDENWISE Seaweed Fertilizer

• Weight: 8 oz
• Form: Liquid

Best for: Kelp-focused lavender feeding.

Why it ranks #3: Lavender-labeled liquid kelp fertilizer lists more than 60 trace elements, amino acids, enzymes, carbohydrates, and micronutrients for indoor or outdoor use.

More than 60 trace elements, amino acids, enzymes, carbohydrates, and micronutrients from Ascophyllum nodosum kelp define this liquid feed. GARDENWISE positions the formula for lavender blooms and aroma, giving growers seeking a kelp-based supplement a specific route to support both flowering and fragrant foliage.

The kelp-derived nutrient blend is associated in the product facts with vigorous growth, more vibrant blooms, and intensified natural aroma, making it relevant to growers prioritizing lavender’s ornamental and fragrant qualities. Its liquid form is listed for indoor and outdoor use, so it can fit either housegrown lavender or garden planting. The supplied information does not give a dilution rate or application schedule, which leaves the mixing and routine details to the product directions.

Skip it if you need a defined concentrate-to-water ratio; Gardenera 3-1-2 Liquid Fertilizer specifies one teaspoon per gallon.

A fit for lavender growers seeking a kelp-based liquid for indoor or outdoor plants, especially when blooms and fragrance matter. Check its directions for mixing and timing, since those details are not stated here.

Listed on Amazon as: GARDENWISE Organic Seaweed Fertilizer for Lavender – Rich Nutrients Kelp Fertilizer for Plants | Indoor & Outdoor Use – Liquid Plant Food (8 OZ)

#4 · Best Small Superfood

4. Gardenera Lavender Superfood 8 oz

• Weight: 8 oz
• Form: Liquid

Best for: Multi-medium lavender growers.

Why it ranks #4: Lavender-specific organic liquid concentrate describes 18 essential vitamins and minerals, micro-fungi, and bio-organisms; the 8-ounce size suits a smaller bottle preference.

Eighteen essential vitamins and minerals distinguish Gardenera’s lavender superfood concentrate, giving growers a broad nutrient blend rather than a single-purpose supplement. Its stated compatibility spans soil and growing media that include hydroponics, semi-hydro, and LECA, so it can follow lavender across varied cultivation setups.

The all-purpose liquid concentrate is presented for lavender and a wide range of growing media, including hydroponics, semi-hydro, LECA, terrariums, and water gardens. That breadth can simplify product selection when plants share a varied setup, while the 18-nutrient formulation supplies the named superfood approach. The description links the blend to aromatic blooms, vibrant foliage, and lavender scent. No dilution amount or application interval is provided in the supplied facts, so consult product directions for routine details.

Skip it if you need a stated dilution and feeding interval; Gardenera 3-1-2 Liquid Fertilizer lists one teaspoon per gallon and every-other-watering use.

Consider this for lavender growers using varied growing media who want an 18-nutrient liquid concentrate. Its broad compatibility is useful, but the supplied facts do not specify mixing or feeding frequency.

Listed on Amazon as: Gardenera Plant Growth Superfood for Lavender with 18 Essential Vitamins & Minerals – Organic Plant Food Fertilizer – Micro-Fungi and Bio-Organisms for Lavender Plant Care & Growth Enhancement – 8oz

#5 · Best Root Support

5. Gardenera Lavender Superfood Spray

• Weight: 8 oz
• Form: Liquid

Best for: Lavender transplant support.

Why it ranks #5: Lavender-labeled liquid spray includes Vitamin B-1 for root development and lists iron, manganese, and zinc for indoor and outdoor plants.

Vitamin B-1 is highlighted for stimulating root development and reducing transplant shock, making this Gardenera spray especially relevant when lavender is being moved or established. The product also lists iron, manganese, and zinc, while its indoor-and-outdoor scope extends use beyond a single growing location.

The liquid spray pairs Vitamin B-1 with named micronutrients—iron, manganese, and zinc—so its stated role combines root-development support with broader plant nutrition. Its lavender-specific positioning and suitability for container plants provide a fit for indoor pots as well as outdoor lavender. Because the item is identified as a spray, it offers a different application approach from concentrates that must be diluted. The supplied facts do not specify a spray frequency or dilution amount.

Skip it if you prefer a stated watering-can dilution and feeding interval; Gardenera 3-1-2 Liquid Fertilizer specifies both.

Consider this spray for lavender growers establishing or transplanting plants who value the stated root-support role of Vitamin B-1. It covers indoor and outdoor settings, but the supplied details omit a spray schedule.

Listed on Amazon as: BESTSELLER Plant Superfood for Lavender Plants with Essential Minerals – Premium Organic Plant Food Fertilizer for Indoor & Outdoor Lavender – 8oz

#6

6. Gardenera Lavender Silica Supplement

• Weight: 8 oz
• Form: Liquid

Best for: Stem-strength silica supplement.

Why it ranks #6: Lavender-specific silica liquid targets stronger stems and healthy leaves, with directions of 1–1.5 teaspoons per gallon during growth and one teaspoon during bloom.

Silica is the central feature of this lavender supplement, with the formula said to reinforce cell walls and strengthen stems against breakage. That targeted role suits growers focused on stalk resilience and leaf condition, and the product is listed for both soil gardens and hydroponic systems.

Mix 1 to 1.5 teaspoons per gallon during the grow phase and one teaspoon per gallon during bloom, then use with every watering, according to the directions. This phase-based dilution gives growers a defined routine, while compatibility with soil and hydroponics accommodates different lavender setups. The product also claims to protect delicate leaves from browning and lists an 8-ounce bottle that makes 45 gallons. It functions as a silica supplement, not a general nutrient blend in the supplied facts.

Skip it if you want a general nutrient blend rather than silica support; Gardenera Plant Growth Superfood for Lavender lists 18 vitamins and minerals.

This fits lavender growers targeting stem strength and leaf condition in soil or hydroponic systems, and who can follow phase-specific mixing. Treat it as a silica-focused supplement rather than a complete general plant food.

Listed on Amazon as: PREMIUM Liquid Silica Plant Supplement – 8oz (250mL) – Lavender Plants Liquid Silica Boost Fertilizer – Stronger Stems & Healthy Leaves for Indoor & Outdoor Lavender Plants (Makes 45 Gallons)

#7

7. Gardenera Lavender Superfood 32 oz

• Weight: 2 lb
• Form: Liquid

Best for: Large-volume lavender superfood.

Why it ranks #7: Lavender-specific organic liquid lists 18 essential vitamins and minerals and micro-organisms; its 32-ounce format offers more concentrate than the matching 8-ounce option.

The 32-ounce size pairs with an 18-essential-nutrient blend to give lavender growers a larger supply of Gardenera’s organic superfood concentrate. Its listed compatibility spans soil and varied media such as hydroponics, semi-hydro, and LECA, which can suit care routines that include more than conventional potting mixes.

Gardenera describes this lavender-focused liquid as a superfood concentrate for aromatic blooms, vibrant foliage, and lavender scent, supported by 18 essential vitamins and minerals. Its stated range includes soil, hydroponics, semi-hydro, and LECA, so one product can serve plants in different media. The 32-ounce bottle is larger than the listed 8-ounce version of the same product, offering more concentrate on hand. The supplied facts do not state a dilution rate or feeding interval.

Skip it if you want a smaller bottle of the same 18-nutrient blend; Gardenera Plant Growth Superfood for Lavender is also listed in an 8-ounce size.

This suits lavender growers who want the 18-nutrient superfood in a larger bottle and use varied growing media. The supplied details establish broad compatibility, but you will need product directions for mixing and feeding frequency.

Listed on Amazon as: Gardenera Plant Growth Superfood for Lavender with 18 Essential Vitamins & Minerals – Organic Plant Food Fertilizer – Micro-Fungi and Bio-Organisms for Lavender Plant Care & Growth Enhancement – 32oz

#8

8. Osmocote Smart-Release Plant Food

• Weight: 16 oz
• Form: Granules

Best for: Low-frequency granular feeding.

Why it ranks #8: General-purpose granules can feed flowers in containers or beds and provide 11 nutrients for up to six months, though they are not lavender-specific.

One application supplies 11 essential nutrients for up to six months, making Osmocote a fit for lavender growers who prefer a less frequent feeding routine. Its granular form works across containers, raised beds, and in-ground gardens, giving users flexibility to apply the same plant food in different growing locations.

The resin-coated granules release nutrition over time, supporting a feeding interval of up to six months rather than requiring liquid food at each watering. Eleven essential nutrients are included, and the product is listed for virtually all plants and growing conditions, including indoor and outdoor containers, raised beds, and in-ground beds. This broad compatibility can simplify care across a mixed garden. The supplied details do not provide a lavender-specific nutrient ratio or application quantity.

Skip it if you want a water-soluble feed that starts working instantly; Miracle-Gro Water Soluble All Purpose Plant Food offers that format.

This suits lavender growers who favor granular application and a feeding interval of up to six months across pots or garden beds. Its broad-use formula is not lavender-specific, and the supplied facts give no application quantity.

Listed on Amazon as: Osmocote Smart Release Plant Food Plus Outdoor and Indoor1, 1 lb.

#9

9. Miracle-Gro Liquid All Purpose

• Weight: 2 lb
• Form: Liquid

Best for: Frequent liquid feeding.

Why it ranks #9: Liquid concentrate feeds flowers and other plants, with directions to feed every one to two weeks; it is broadly intended rather than lavender-specific.

A liquid concentrate that feeds instantly makes Miracle-Gro convenient for lavender growers who prefer adding plant food to a watering-can routine. Its instructions cover both garden beds and containers, with different measuring guidance for in-ground areas and container plants, so application can adapt to how lavender is grown.

For in-ground plants, the directions call for filling the cap to the first line and mixing it with two gallons of water for 20 square feet; container instructions use one teaspoon in water. Feeding every one to two weeks creates a recurring schedule, and the product is listed for flowers and many other plant types. Shaking the bottle before use and measuring for the growing area are part of the routine, so it involves more frequent preparation than long-release granules.

Skip it if you want a single application to feed for up to six months; Osmocote Smart-Release Plant Food Plus offers that duration.

Choose this for lavender growers who already water-feed flowers and want an instant-working liquid concentrate for pots or beds. Its every-one-to-two-week schedule requires more regular mixing than a long-release granular routine.

Listed on Amazon as: Miracle-Gro Liquid All Purpose Plant Food, Concentrate, 32 oz.

#10

10. Miracle-Gro Water Soluble Food

• Weight: 1.5 lb
• Form: Powder

Best for: Mixed-plant feeding routines.

Why it ranks #10: Water-soluble 24-8-16 powder is an all-purpose indoor and outdoor food, but the supplied details do not give lavender-specific formulation or directions.

A water-soluble 24-8-16 formula feeds indoor and outdoor plants and starts working instantly, making Miracle-Gro a practical choice for gardeners caring for lavender alongside other plant types. Its all-purpose scope covers flowers, houseplants, vegetables, trees, and more, reducing the need for a lavender-only product in a mixed planting.

The powder dissolves in water and delivers an immediate nutrient boost, which suits gardeners who already prepare feed for multiple plants. Its stated 24-8-16 NPK ratio provides a defined formulation, while the all-purpose label covers both indoor and outdoor plants, including flowers such as lavender. The product is described as safe for all plants when used as directed and not burning plants under those conditions. Store leftovers closed in a dry spot away from children and pets.

Skip it if you want a lavender-specific feed with fragrance support; TPS NUTRIENTS Lavender Fertilizer targets fragrant blooms and aromatic foliage.

Choose this for gardeners feeding lavender as part of a larger indoor or outdoor collection who value a water-soluble general formula. It is not lavender-specific, so specialized bloom and aroma claims are not its focus.

Listed on Amazon as: Miracle-Gro Water Soluble All Purpose Plant Food, 1.5 lb.