10 Best Fertilizers for Lavender Plants to Keep Them Thriving

I’ve found that the best lavender fertilizers feature low-nitrogen formulas like 3-1-2 ratios, which promote vibrant blooms without excessive foliage growth. Premium liquid lavender fertilizers, organic seaweed concentrates with 60+ trace elements, and specialized spray mists deliver targeted nutrition that transforms struggling plants into fragrant powerhouses. I recommend applying these fertilizers every 4-6 weeks during growing season, starting in spring and reducing before winter to prevent frost damage. The key factors below will help you choose the perfect formula for your garden’s specific needs.

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Notable Insights

• Choose fertilizers with low nitrogen NPK ratios like 3-1-2 or 1-0.03-13 to promote blooming over excessive foliage growth.
• Apply fertilizers during spring through summer every 4-6 weeks, then reduce in fall and stop before winter.
• Premium Liquid Lavender Fertilizer and Lavender Organic Superfood Concentrate are specifically formulated for optimal lavender health and blooming.
• Organic seaweed fertilizers provide over 60 trace elements and amino acids for comprehensive nutrition and enhanced aroma.
• Avoid over-fertilization and monitor plant growth regularly to prevent nutrient burn and maintain healthy lavender development.

Premium Liquid Lavender Plant Fertilizer by Gardenera (8oz)

If you’re cultivating lavender indoors and seeking a fertilizer that understands your plant’s unique nutritional needs, Gardenera’s Premium Liquid Lavender Plant Fertilizer stands as an exceptional choice for indoor gardeners. This 8oz concentrate features a carefully balanced 3-1-2 ratio of nitrogen, phosphorus, and potassium, specifically formulated to encourage vibrant blooms while maintaining lavender’s characteristic silvery-green foliage. You’ll appreciate the organic composition, which eliminates artificial additives and preserves your plant’s authentic aromatic qualities. Simply mix one teaspoon with a gallon of water, then apply during every other watering cycle to provide consistent nourishment throughout all growth phases, from delicate seedlings to mature, fragrant plants.

Best For: Indoor gardeners who want to cultivate healthy, fragrant lavender plants with a specialized organic fertilizer that promotes vibrant blooms and maintains authentic aromatic qualities.

Pros:

• Specifically formulated 3-1-2 nutrient ratio designed for lavender’s unique needs, promoting both vibrant blooms and healthy silvery-green foliage
• Organic composition without artificial additives preserves the plant’s natural aromatic properties and supports holistic growth
• Simple application process with clear mixing instructions and suitable for all growth phases from seedlings to mature plants

Cons:

• Limited to 8oz size which may require frequent repurchasing for gardeners with multiple lavender plants
• Requires dilution with water before each use, adding an extra step compared to ready-to-use fertilizers
• Specialized formula is designed specifically for lavender, limiting versatility for other indoor plants

Plant Growth Superfood for Lavender with 18 Essential Vitamins & Minerals (8oz)

Gardeners seeking thorough nutrition for their lavender plants will find exceptional value in Gardenera’s Lavender Organic Superfood Concentrate, which delivers 18 essential nutrients in one powerful 8-ounce formula. This organic concentrate combines premium ingredients like bat guano, worm castings, kelp meal, and mycorrhizae through a specialized zymology process that makes nutrients readily absorbable by your plants. The formula’s unique NPK ratio of 1-0.03-13 specifically targets lavender’s nutritional needs, promoting robust root development, healthy foliage, and abundant blooms. You’ll appreciate the simple application method: just mix 2 tablespoons per gallon of water for regular feeding sessions that nourish your lavender throughout the growing season.

Best For: Gardeners who want to provide specialized, organic nutrition for their lavender plants using a concentrated formula that promotes healthy root development, foliage growth, and abundant blooms.

Pros:

• Contains 18 essential nutrients specifically formulated for lavender with an optimal NPK ratio of 1-0.03-13
• Made through a specialized zymology process that ensures nutrients are readily absorbable by plants
• Safe, non-GMO, chemical-free formula that never expires and is suitable for various growing environments including hydroponics and terrariums

Cons:

• Specifically formulated for lavender, which may limit its effectiveness for other plant varieties
• Requires mixing preparation (2 tablespoons per gallon) rather than ready-to-use application
• 8oz size may not provide long-term value for gardeners with large lavender gardens or multiple plants

Organic Seaweed Fertilizer for Lavender – Liquid Plant Food (8 OZ)

Lavender enthusiasts seeking a natural, nutrient-rich solution will find exceptional value in this organic seaweed fertilizer, which harnesses the power of Ascophyllum Nodosum kelp to deliver over 60 essential trace elements directly to your plants. This 8-ounce liquid formula contains amino acids, enzymes, and micronutrients that release your lavender’s full growth potential, promoting vigorous development and more vibrant blooms while intensifying the plant’s natural aroma. You’ll appreciate its dual application methods: use it as a soil drench when the top inch feels dry, or apply as a foliar spray for immediate nutrient absorption without burn risk, ensuring ideal hydration and well-drained conditions your lavender craves.

Best For: Lavender and Dracaena plant owners who want an organic, chemical-free fertilizer that promotes vigorous growth, enhances bloom quality, and intensifies natural aroma while being safe for children and pets.

Pros:

• Contains over 60 trace elements, amino acids, and enzymes from Ascophyllum Nodosum kelp for comprehensive plant nutrition
• Dual application methods as soil drench or foliar spray with no risk of nutrient burn
• 100% organic and chemical-free formulation that’s safe for children, pets, and environmentally sustainable

Cons:

• Only available in a small 8 OZ size which may require frequent repurchasing for multiple plants
• Requires regular application every 7 to 10 days for optimal results, demanding consistent maintenance
• Specifically formulated for only two plant types (Lavender and Dracaena), limiting versatility for diverse gardens

Professional Lavender Spray Fertilizer Mist for Home Gardening (8oz)

Because convenience matters most for busy home gardeners, this Professional Lavender Spray Fertilizer Mist delivers targeted nutrition in an easy-to-use 8oz bottle. The 3-1-2 liquid fertilizer blend specifically addresses lavender’s nutritional requirements, promoting vibrant blooms and robust foliage across English, French, and other varieties. You’ll appreciate the organic formula that strengthens plants against pests and diseases while providing chemical-free nourishment for long-term health. Simply shake the pre-mixed bottle, hold it twelve inches from your plants, and spray evenly for gentle weekly feedings that won’t disrupt soil structure or cause overwatering concerns.

Best For: Home gardeners who want a convenient, organic fertilizer solution specifically formulated for lavender plants that requires minimal preparation and application effort.

Pros:

• Pre-mixed spray bottle eliminates measuring and mixing, making fertilizing quick and convenient
• Organic 3-1-2 formula is specifically designed for lavender’s nutritional needs and strengthens plant immunity
• Fine mist application prevents soil disruption and overwatering while allowing for gentle weekly feedings

Cons:

• 8oz bottle size may require frequent repurchasing for gardeners with multiple or large lavender plants
• Spray application method may be less economical than concentrated fertilizers that can be diluted
• Limited to lavender plants only, reducing versatility compared to general-purpose fertilizers

Miracle-Gro Performance Organics Blooms Plant Nutrition Granules (2.5 lbs)

Organic-minded gardeners who want OMRI-listed certification for their lavender gardens will find Miracle-Gro Performance Organics Blooms Plant Nutrition Granules delivers reliable results. This 2.5-pound formulation combines organic compliance with proven effectiveness, promoting vibrant flower colors and increased blooms compared to unfed plants. You’ll appreciate the organic and natural ingredients that support healthy lavender growth while maintaining environmental standards. The granular format covers up to 165 square feet, making it ideal for larger lavender plantings or multiple garden beds. Apply every 4-6 weeks during growing season, ensuring regular watering afterward for maximum nutrient absorption and sustained flowering performance throughout the season.

Best For: Organic-minded gardeners who want OMRI-listed certification for their flowering plants and need effective nutrition that promotes vibrant blooms while maintaining environmental standards.

Pros:

• OMRI-listed organic certification ensures compliance with organic gardening standards
• Promotes more blooms and enhances vibrant flower colors compared to unfed plants
• Large coverage area of up to 165 sq. ft. makes it cost-effective for bigger gardens

Cons:

• Requires frequent reapplication every 4-6 weeks throughout the growing season
• Must be followed by regular watering for optimal nutrient absorption
• At 2.5 lbs, may not be sufficient for very large garden installations

Miracle-Gro Water Soluble All Purpose Plant Food (3 lbs)

Gardeners seeking an affordable, versatile solution that works across multiple plant types will find Miracle-Gro Water Soluble All Purpose Plant Food an excellent choice for their lavender gardens. This powder fertilizer delivers essential nutrients instantly, promoting bigger growth and healthier plants when mixed with water every 1-2 weeks. You’ll appreciate its safety guarantee, which prevents burning when used as directed, making it perfect for delicate lavender plants. The 3-pound container provides excellent coverage, feeding approximately 600 square feet with a garden feeder. Start with half-strength doses to assess your lavender’s response, then adjust accordingly for best results.

Best For: Gardeners seeking an affordable, versatile fertilizer solution that works safely across multiple plant types including flowers, vegetables, trees, and houseplants both indoors and outdoors.

Pros:

• Instantly feeds plants with essential nutrients, delivering visible growth improvements and greener leaves across all plant varieties
• Safe for all plants with a guarantee not to burn when used as directed, plus easy-to-follow mixing instructions
• Excellent value with 3-pound container providing extensive coverage (600 sq ft with garden feeder) and highly rated by over 64,000 customers

Cons:

• Potential for leaf burning if overused, requiring careful attention to dosage instructions and gradual application
• Requires regular reapplication every 1-2 weeks, making it more time-intensive than slow-release fertilizer options
• Some customers have reported issues with order fulfillment and delivery from certain sellers

TPS Plant Foods Lavender Fertilizer, Liquid Fertilizer (32 oz)

TPS Plant Foods Lavender Fertilizer stands out as the top choice for gardeners who want a specialized liquid formula that delivers nutrients directly to their lavender’s root system. This 32-ounce concentrate works specifically with Mediterranean herbs, providing balanced NPK nutrients and essential micronutrients that encourage vibrant blooms and compact growth patterns. You’ll appreciate how the liquid formula absorbs quickly, promoting strong stems and healthy silvery-green foliage across English, French, and Spanish lavender varieties. The hassle-free application method lets you mix and pour using standard watering cans or hose-end sprayers for consistent feeding throughout growing seasons.

Best For: Gardeners who want to cultivate healthy, aromatic lavender plants and other Mediterranean herbs with a specialized liquid fertilizer that promotes vibrant blooms and compact growth.

Pros:

• Quick-absorbing liquid formula delivers nutrients directly to the root system for fast, visible results
• Specifically formulated for lavender and Mediterranean herbs with balanced NPK and essential micronutrients
• Easy application with standard watering cans or hose-end sprayers for hassle-free feeding

Cons:

• Limited to 32-ounce size which may require frequent repurchasing for larger gardens
• Specialized formula may be more expensive than general-purpose fertilizers
• Requires regular mixing and application rather than slow-release convenience

Plant Superfood for Lavender Plants with B1 Vitamin & Essential Minerals (8oz)

When you’re seeking an inclusive liquid fertilizer that delivers both immediate and long-term benefits, Plant Superfood for Lavender Plants with B1 Vitamin & Essential Minerals stands out as an exceptional choice. This organic fertilizer combines Vitamin B-1, iron, manganese, and zinc to support robust root development while reducing transplant shock. The glucose content provides an instant energy boost, enhancing your lavender’s metabolic processes and promoting vigorous growth throughout the season. You’ll appreciate the convenient 8oz spray format, which makes application effortless when sprayed directly onto leaves and stems after sunset for ideal absorption. Weekly applications alongside regular watering guarantee consistent nutrient delivery year-round.

Best For: Gardeners and plant enthusiasts looking for an organic, easy-to-apply liquid fertilizer to promote healthy lavender growth, reduce transplant shock, and provide consistent nutrition for both indoor and outdoor plants year-round.

Pros:

• Contains essential nutrients (B1 vitamin, iron, manganese, zinc) plus glucose for immediate energy boost and long-term plant health
• Convenient 8oz spray format allows for easy application directly on leaves and stems without mixing or measuring
• Effective year-round for both indoor and outdoor use, providing consistent nourishment through all seasons

Cons:

• Requires weekly applications which may be more frequent than some gardeners prefer for maintenance
• Must be applied after sunset for optimal absorption, limiting application timing flexibility
• Specifically formulated for lavender plants, potentially limiting versatility compared to general-purpose fertilizers

PROFESSIONAL Liquid Silica Plant Supplement for Lavender Plants (32oz)

The PROFESSIONAL Liquid Silica Plant Supplement delivers concentrated strength-building nutrients that transform fragile lavender stems into robust, weather-resistant stalks capable of supporting abundant blooms. This 32-ounce formula creates 180 gallons of plant-strengthening solution, making it an economical choice for extensive lavender gardens. The silica reinforces cellular walls throughout your plants, producing thicker stems and preventing the heartbreaking snap of heavy flower-laden branches during windy conditions.

You’ll notice your lavender developing remarkable resilience against heat stress, drought conditions, and humidity fluctuations that typically challenge these Mediterranean natives. The supplement works equally well in hydroponic systems and traditional soil gardens, adapting to your preferred growing method. Apply it easily through watering cans, hose-end sprayers, or foliar applications for maximum flexibility.

Best For: Gardeners growing lavender plants who want to strengthen stems, prevent breakage, and improve their plants’ resilience to environmental stress in both indoor and outdoor settings.

Pros:

• Highly concentrated formula that makes 180 gallons from 32oz, providing excellent value for large gardens
• Strengthens plant cell walls to create thicker, more robust stems that resist breaking under the weight of blooms
• Versatile application methods including watering cans, hose-end sprayers, and foliar sprays for different garden setups

Cons:

• Specifically formulated for lavender plants, limiting use for diverse garden varieties
• Requires proper dilution and mixing which may be inconvenient for some gardeners
• 32oz bottle may be excessive for small-scale or casual lavender growers

Lavender Potting Soil Mix (8 Quarts) for Indoor/Outdoor Container Gardening

Container gardeners who want specialized growing medium for their lavender plants will find Soil Sunrise’s Lavender Potting Soil Mix perfectly suited for their needs. This 8-quart blend contains essential components like peat moss, perlite, pumice, and worm castings that create ideal drainage conditions lavender requires. You’ll appreciate how the horticultural charcoal and lime work together to maintain proper pH levels while preventing root rot. The natural formula enhances both water retention and aeration, giving your lavender plants the balanced environment they need to flourish in containers indoors or outdoors.

Best For: Container gardeners growing lavender plants indoors or outdoors who need a specialized soil mix that provides optimal drainage, pH balance, and nutrient retention for healthy lavender growth.

Pros:

• Specially formulated blend with essential components like peat moss, perlite, and pumice creates ideal drainage conditions that lavender plants require
• Contains horticultural charcoal and lime to maintain proper pH levels and prevent root rot
• 100% natural formula with worm castings provides balanced water retention and aeration for optimal plant health

Cons:

• At 8 quarts, the quantity may be insufficient for gardeners with multiple large containers or extensive lavender gardens
• Specialized formulation makes it less versatile compared to general-purpose potting mixes for other plant types
• Higher cost per quart compared to basic potting soils due to specialized ingredients and targeted formulation

Factors to Consider When Choosing Fertilizer for Lavender Plants

When I help gardeners select the right fertilizer for their lavender plants, I focus on five critical factors that determine success in both containers and garden beds. Understanding your lavender’s specific NPK requirements, whether organic or synthetic options work better for your situation, and how soil pH affects nutrient uptake will guide your fertilizer choice. I’ll also walk you through drainage considerations, moisture management, and application methods that guarantee your lavender thrives without the common pitfalls of over-fertilization.

NPK Ratio Requirements

Understanding lavender’s unique nutritional preferences will set you up for success, as these Mediterranean natives require a carefully balanced fertilizer approach that differs greatly from most garden plants. I recommend selecting fertilizers with lower nitrogen content, specifically NPK ratios like 3-1-2 or 1-0.03-13, which promote robust blooming and healthy root development. You’ll want to prioritize phosphorus for vibrant flower production, while potassium strengthens stems and enhances overall plant resilience against environmental stress. I’ve found that these balanced ratios also intensify lavender’s aromatic qualities, creating more fragrant blooms that you’ll truly appreciate. Monitor your soil’s nutrient levels regularly, as this allows you to adjust fertilizer choices based on your lavender’s specific growth phases and seasonal needs.

Organic Vs Synthetic Options

Once you’ve identified the proper NPK ratios for your lavender, the next decision involves choosing between organic and synthetic fertilizer options, each offering distinct advantages for your Mediterranean herbs. I recommend organic fertilizers like compost and seaweed-based products because they provide balanced nutrients without risking chemical buildup in your soil. These natural options support beneficial microorganisms that improve soil health and nutrient availability over time, while synthetic fertilizers may disrupt this delicate soil biology. Organic fertilizers also enhance soil structure and drainage, which lavender absolutely requires, and they help retain appropriate moisture levels. While synthetic options deliver nutrients quickly, they risk nutrient burn and require more frequent applications, making organic choices the superior long-term investment for thriving lavender plants.

Soil Ph Preferences

Beyond selecting the right fertilizer type, soil pH stands as the foundation that determines whether your lavender plants can actually access those carefully chosen nutrients. I recommend maintaining a slightly alkaline to neutral pH range between 6.5 and 7.5, which creates ideal conditions for nutrient absorption. When soil pH drops below 6.0, your lavender can’t properly uptake essential nutrients like nitrogen, phosphorus, and potassium, leading to stunted growth and disappointing flowering displays.

I suggest testing your soil regularly to monitor pH levels and make timely adjustments. If you’re dealing with acidic soil, incorporating lime will raise the pH effectively, creating that favorable alkaline environment lavender craves. Remember, even premium fertilizers won’t deliver results if your soil pH blocks nutrient availability.

Drainage and Moisture Needs

Proper drainage becomes your lavender’s lifeline, as these Mediterranean natives demand soil conditions that mirror their rocky, hillside origins. I recommend selecting fertilizers that enhance soil aeration and drainage qualities, preventing the root rot that destroys these beautiful plants. You’ll want to avoid fertilizers that retain excessive moisture, since lavenders thrive in dry conditions and can’t tolerate waterlogged roots.

Organic fertilizers containing seaweed or worm castings work exceptionally well, improving soil structure while providing essential nutrients without compromising drainage. I suggest monitoring soil moisture regularly, applying fertilizer only when the top inch feels dry to your touch. Choose fertilizers that promote strong root development, helping your lavender establish resilience against drought conditions and ensuring long-term garden success.

Application Method Suitability

While selecting the right nutrients matters greatly, choosing an appropriate application method proves equally essential for your lavender’s health and development. I recommend evaluating whether you prefer liquid fertilizers for immediate nutrient absorption or granular forms that provide sustained release over time. Spray fertilizers offer excellent convenience, allowing weekly foliar feeding that minimizes soil disruption while maintaining consistent nourishment for your plants. For soil applications, I suggest choosing fertilizers that dilute easily with water, ensuring even distribution and preventing harmful nutrient burn when applied correctly. When using soil drench methods, always mix fertilizers to appropriate concentrations to avoid over-saturation and promote healthy root development in your lavender garden.

Seasonal Feeding Schedule

A strategic seasonal feeding schedule transforms lavender cultivation, ensuring your plants receive ideal nutrition when they need it most. I recommend beginning fertilization in spring when new growth emerges, supporting robust root development and healthy foliage formation. During summer’s active growing period, I apply fertilizer every four to six weeks, which enhances bloom production and maintains vibrant plant health throughout the season. As fall approaches and growth naturally slows, I reduce feeding frequency considerably, then halt fertilization completely to prevent frost-susceptible new growth. Winter requires no additional nutrients since lavender enters dormancy, conserving energy for spring’s renewal. This targeted approach aligns feeding with natural growth cycles, maximizing plant vigor while avoiding unnecessary stress.

Lavender Variety Considerations

Understanding your lavender variety’s specific characteristics guarantees you select the most suitable fertilizer for the best growth and flowering success. English lavender thrives with balanced fertilizers, while French and Spanish varieties often benefit from higher phosphorus levels to enhance their vibrant blooms. I recommend adjusting your fertilizer choice based on your growing conditions, as climate and soil type greatly influence nutrient requirements for each variety.

Your soil preparation also affects nutrient availability, making it essential to tailor fertilizer application accordingly. Since all lavender varieties prefer lower nitrogen levels, I suggest choosing balanced or low-nitrogen fertilizers to prevent excessive foliage growth. Additionally, understanding your lavender’s growth stage helps determine the best fertilizer timing, ensuring you provide nutrients when your plants need them most for healthy development and abundant flowering.

On a final note

I’ve guided you through eight exceptional fertilizer options that’ll keep your lavender plants healthy, vibrant, and fragrant throughout the growing season. Whether you choose liquid concentrates, organic granules, or specialized nutrient blends, each product offers unique benefits for different gardening situations. Remember to take into account your lavender’s specific needs, soil conditions, and growth stage when selecting fertilizers. With proper nutrition and care, you’ll enjoy thriving lavender plants that reward you with beautiful blooms and aromatic foliage for years to come.