Fertilizer

Fertilizer

$20
$20
% OFF
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Our all-natural fertilizer is specifically formulated to supply macronutrients and essential trace elements in one easy-to-use liquid concentrate. Designed for use on indoor plants for optimal growth, but can be used on outdoor plants as well. Nutritionally complete and creates less salt buildup than other fertilizers. Made in the USA.

  • 9-3-6 NPK ratio
  • Bottle contains 8 fl oz (approximately 40 applications)
  • Made in the USA
  • Not eligible for discounts or promotions

Our Guarantee

Your plants will arrive in happy, healthy condition—guaranteed. If not, we replace them for free.

Simply reach out to us with a photo within 30 days of receiving your order. Learn More About Guarantee.

Shipping & Returns

All orders placed on TheSill.com receive free standard shipping! There are no minimums that you have to meet to enjoy this perk. View our full shipping policy.

Sending a Gift?

First, lucky them! Second, in the cart, before checkout, you’ll find an option to add a gift note. You can rest assured that all orders are shipped without pricing information and include directions on how to access our digital Care Library for plant care instructions.

You can also let your gift recipient know something is on the way from yours truly by filling out this form – also linked in your order confirmation email. (Don’t worry, we won’t spoil what the surprise is or send them any marketing emails.)

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Plant Care Help: Virtual Plant Appointment

From plant-specific care, to repotting tips and tricks, to pest identification—we’re here to help. Chat directly via video with a knowledgeable houseplant expert from The Sill team. We’ll kick off your appointment with a quick environmental assessment of your space, then dive into your care questions and concerns. Appointment windows are available Monday through Friday between the hours of 9am and 5pm, and are subject to our houseplant expert’s availability.

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