Grow More® Indoor & Outdoor Tropical Plant Food — 1.25 lb Jar

Urea-Free Nutrition Built for the Tight Root Volume of Container Tropicals

Urea-based fertilizers can accumulate in enclosed or low-drainage growing spaces, converting to ammonia and stressing sensitive tropical roots before it ever reaches the plant as usable nitrogen. Grow More Indoor & Outdoor Tropical Plant Food skips urea entirely, instead pairing calcium, magnesium, and sulfur — the secondary macronutrients standard all-purpose feeds tend to skip — with a full micronutrient package sized for the restricted root volume of container growing.

The 1.25 lb jar dissolves for use as a soil drench across a wide range of tropical container plants, from foliage houseplants and palms to ferns, bonsai, terrarium specimens, and cacti, indoors or out.

Key Features & Benefits

• Urea-Free Formula: Avoids the ammonia buildup risk urea can cause in enclosed containers, terrariums, and bottle gardens.
• Calcium, Magnesium, and Sulfur: Covers the secondary macronutrients most general-purpose plant foods leave out, supporting cell walls, chlorophyll, and enzyme function.
• Full Micronutrient Package: Addresses the trace-element depletion that happens quickly in root-restricted container growing.
• Broad Tropical Species Fit: Labeled for foliage plants, palms, climbers, ferns, terrariums, bottle gardens, bonsai, and cacti.
• Indoor and Outdoor Use: Works across indoor container collections and outdoor patio or landscape container plantings alike.

Who Should Use This

Tropical plant collectors, terrarium builders, bonsai keepers, and indoor gardeners managing a mixed container collection are the direct fit, especially anyone who has run into ammonia-related issues from urea-based feeds in an enclosed growing space.

About Grow More Inc.

Grow More Inc. has produced fertilizers and micronutrient blends since 1918, originating as National Chemical Company in Hollywood, California and now based in Gardena, California with a catalog spanning tropical, palm, orchid, and general horticultural feeding lines.

Frequently Asked Questions

Why is urea a problem for enclosed container plants?

Urea must convert to ammonium and then nitrate through microbial activity before plants can use it, and in enclosed spaces like terrariums or tight containers that conversion can release ammonia that damages sensitive roots. A urea-free formula avoids that conversion step entirely.

Can this be used on succulents and cacti?

Yes, cacti are listed as a suitable use for this formula. Apply at a reduced rate, since cacti and succulents generally need less frequent and lower-concentration feeding than fast-growing tropicals.

Is this a good choice for orchids?

It can be used on general tropical foliage, but growers wanting an orchid-specific feeding program should look at Grow More's dedicated Premium Orchid Food Growth and Bloom formulas, which are tailored to orchid feeding protocols. Those two formulas match orchid NPK requirements more precisely than a general tropical feed.

How often should I feed my tropical container plants?

During the active spring-through-summer growing season, feed every 2 to 4 weeks. In winter, when growth slows, stretch that to every 6 to 8 weeks or pause feeding until spring.

Can this be used on ferns growing in a terrarium?

Yes, the urea-free formula and full micronutrient package suit terrarium and bottle garden ferns, where standard fertilizers can cause ammonia buildup. Use a lower concentration than a typical outdoor container rate.