Best Garden Fertilizers for Trees & Shrubs of 2026

The Almanac Fertilizer Spikes by The Old Farmer's Almanac are a great way to provide fast acting and long-lasting nutrition to your trees, evergreens, and shrubs. These 5 Inch TruSpikes are designed to be easy to use - simply hammer them into the ground without the need for a cap, and they won't break or shatter. With a simple feeding schedule of once per season, these spikes continuously fertilize your plants, promoting stronger growth and vibrant color. The spikes contain natural ingredients, including molasses, which release nutrition directly into the root zone, resulting in healthier and more robust trees and shrubs. With a nutrient-rich formula and a combination of nitrogen, phosphorus, and potassium, these spikes provide the essential elements for plant growth, healthy fruiting, and strong roots.

The Old Farmer's Almanac Fertilizer is designed for quick and lasting nourishment of your trees, evergreens, and shrubs. These convenient 5-inch spikes are easy to insert into the soil, eliminating the hassle of caps and ensuring they won’t break. For optimal growth, simply use them once in early spring and again in late fall, providing continuous support. They contain natural ingredients like molasses that deliver nutrients directly to the roots, promoting stronger plants. With a nutrient-rich formula, you’ll see vibrant growth and healthy blooms in your garden.

Miracle-Gro Tree & Shrub Plant Food Spikes contain natural ingredients and promote vibrant colors and lush foliage. These easy-to-use spikes release nutrients directly into the root zone to help promote strong trees and shrubs. Feed once per season in Spring and Fall. They are also great for use on evergreens and acid loving plants.

HiThrive Tree & Shrub Food offers great value by making 16 gallons of nourishing liquid fertilizer from just a 16 oz bottle, so you can feed your outdoor plants for a long time. It supports your plants' growth by providing nitrogen for vibrant leaves, phosphorus to strengthen roots, and potassium to help them stay resilient through changing seasons. This powerful liquid blend also combines essential nutrients that boost root health and encourage thick foliage, making your trees and shrubs stronger and better able to handle drought and stress. Plus, it helps fix common problems like weak roots and sparse leaves, keeping your garden healthy and flourishing year-round.

Miracle-Gro Plant Food is a fantastic choice for your garden. It contains natural ingredients that nourish the soil's microbes, promoting healthy growth. Ideal for all flowering trees, shrubs, and acid-loving plants, it ensures deep green foliage and vibrant blooms all season long. This product kickstarts plant growth and offers continuous feeding for up to 3 months. Whether your plants are in the ground or containers, this convenient option will keep them beautiful.

Gardenwise All-Purpose Fertilizer is a versatile plant food perfect for both indoor and outdoor gardening. It features a balanced formula with equal parts nitrogen, phosphorus, and potassium, which supports all your gardening needs. You can enjoy up to eight weeks of sustained nutrition with its slow-release formula, making it easier for you to maintain your plants with fewer applications. The fine granules ensure even coverage for maximum absorption, allowing your flowers, vegetables, and shrubs to thrive. Plus, the quick-release nitrogen gives your plants an immediate boost for rapid growth, ensuring your garden flourishes beautifully.

The Almanac Fertilizer Spikes are a patented, powerhouse TruSpike that pack robust nutrition designed to feed your trees, evergreens, and shrubs continuously for up to 3 months. These 5-inch spikes are nutrient-rich with a 13-3-3 formula that promotes vigorous and colorful plants, bountiful fruiting and blooms, and strong roots. There's no need for a plastic cap or special equipment, just hammer it in and let it get to work feeding your plants. The spikes release nutrition directly into the root zone where plants need it most, without waste or runoff. For best results, feed 2 times a year, early spring and late fall, for continuous fertilization. Depending on climate and plant variety, an additional application in the summer can provide extra nutrition and help protect from summer stress.

The Old Farmer's Evergreen Fertilizer offers an easy way to nourish your evergreen trees and shrubs. You simply hammer the spikes into the soil—no special tools or caps needed—and they won’t break or crumble, making application hassle-free. The spikes have a balanced 10-4-10 nutrient mix that supports healthy green needles, promotes flowering and fruiting, and strengthens roots. Plus, with added magnesium, your plants get extra care. Feeding your plants twice a year, in spring and fall, keeps them vibrant, and an optional summer application helps protect against heat stress. This product delivers nutrients directly to the roots, reducing waste and runoff for efficient feeding.

Espoma Evergreen-Tone is a natural and organic fertilizer specifically designed for all needle leaf and broadleaf evergreens, including pine, fir, spruce, juniper, azaleas, rhododendron, and camellias. Its rich blend of natural and organic ingredients, enhanced with the exclusive Bio-tone formula, promotes optimum growth and is environmentally safe, containing no sludges or toxic ingredients. Espoma Evergreen-Tone is easy to use and requires no mixing, making it perfect for planting or feeding established plants. It is approved for organic gardening and meets all requirements for organic production. Made in the USA, Espoma Evergreen-Tone is a reliable and trusted choice for gardeners who want to give their plants the best possible care.

Espoma Organic Evergreen-Tone 4-3-4 Natural & Organic Fertilizer is a rich blend of natural & organic ingredients, enhanced with Bio-tone formula. It is environmentally safe, approved for organic gardening, and requires no mixing. Use on needle leaf and broadleaf evergreens, azaleas, rhododendron, and camellias. It is best used when planting or feeding established plants, twice each year in early Spring and late Fall. Made in the USA by the Espoma Company, a leader in natural organics since 1929.