Nourish your evergreen trees and shrubs with these innovative fertilizer spikes from The Old Farmer's Almanac. Pre-measured and packed with a 10-4-10 plant food formula, The Old Farmer's Almanac Evergreen Tree & Shrub Fertilizer Spikes provide essential nutrients evergreens, firs and conifers need for robust growth. Patented TruSpikes make application a breeze - simply hammer them into the soil without needing a cap. These durable spikes won't break, crush or leave a dusty residue. Made in the USA, each plant food fertilizer spike delivers precise, measured nutrition at the roots right where your plants need it most. Take the guesswork out of fertilizing. These fertilizer spikes are perfect for maintaining the health and vitality of your landscape's evergreen trees and ornamental shrubs throughout the growing season.