Best Schultz Spikes Fertilizer of 2026 Top Plant Food Picks

Jobe's Evergreen Fertilizer Spikes are designed to simplify tree and shrub care. If you prefer a no-fuss approach to feeding your evergreens, these pre-measured spikes take the guesswork out of fertilizing. Each spike contains a balanced 13-3-4 NPK formula that releases nutrients slowly over several months. This makes them a solid choice for homeowners who want healthy foliage without constant reapplication.

The standout feature is the slow-release technology. Unlike quick-release feeds that can wash away or burn roots, these spikes deliver nutrients gradually for up to 90 days. I found this especially useful for established evergreens like arborvitae and junipers, where consistent feeding matters. The convenience factor is huge: just push the spikes into moist soil around the drip line and you are done. No measuring, no mixing, no cleanup.

Build quality is straightforward - each spike is compact and easy to handle. The packaging includes clear instructions on how many spikes to use based on trunk diameter, so you avoid overdoing it. They hold together well during insertion and don't crumble. However, if your soil is very compact or rocky, you may need to pre-water or drill a pilot hole. It is not a dealbreaker, but worth noting.

One potential drawback is the pack size. With 15 spikes, you might need multiple packs for larger yards or multiple trees. Also, while the formula works well for most evergreens, it is not a one-size-fits-all; acid-loving evergreens like azaleas may need a different ratio. Additionally, the price per spike is higher than bagged granular fertilizers, but you pay for the convenience and precision.

Overall, Jobe's Evergreen Fertilizer Spikes deliver on their promise of easy, long-term feeding. They are a practical solution for anyone tired of messy granular applications or who tends to forget fertilizing schedules. For healthy, vibrant evergreens with minimal effort, these spikes are a reliable choice.

The Schultz All Purpose Liquid Plant Food is a straightforward, no-nonsense fertilizer that covers a lot of ground. With a 10-15-10 NPK ratio, it’s designed to support all types of plants around your home - from flowering annuals and vegetable patches to your favorite houseplants and even young trees. It’s a liquid concentrate, meaning you only add a few drops to a quart of water each time you feed, and it’s safe to use on a weekly schedule during the growing season.

What stands out is the balance. The slightly higher middle number (phosphorus) encourages strong root systems and blooms, while the nitrogen keeps foliage green and the potassium helps overall plant health. In real-world use, this translates to healthier transplants, more vibrant flowers, and better fruit set on tomatoes and peppers. The liquid format also means nutrients are available immediately, so you’ll see results faster than with slow-release granular products.

The bottle itself is small - just 8 fluid ounces - but it’s concentrated so it goes further than you’d think. The label says a few drops per quart, so for the average indoor gardener or someone with a modest outdoor plot, it should last a good while. That said, if you have a sprawling garden or lots of container plants, you may find yourself reordering more often than you’d like. Also, there’s no integrated dropper or measuring cap, so you’ll need to be careful not to overdo it.

One thing to note: this product isn’t marketed as organic, and it uses synthetic nutrients. That’s fine for most conventional gardeners, but if you’re strictly an organic grower, you might want to look elsewhere. The price is very reasonable, and because it’s a liquid, you can also use it as a foliar spray for a quick nutrient boost.

Overall, the Schultz All Purpose Liquid Plant Food delivers exactly what it promises: reliable, balanced nutrition for nearly any plant you’re growing. It’s simple to use, effective, and affordable. If you want one fertilizer that does it all without a bunch of extra steps, this is a great pick.

The Schultz All Purpose 10-15-10 Plant Food Plus is a liquid fertilizer designed for both indoor and outdoor plants. With a balanced N-P-K ratio of 10-15-10, it supports healthy leaf growth, strong root development, and abundant blooms. This 2-pack gives you two 4-ounce bottles, making it easy to keep one at home and one in the garden or to share with a fellow plant lover.

What sets this product apart is its simplicity. You just add 7 drops per quart of water every time you water, and the nutrients are delivered directly to the roots. The formula includes micronutrients that encourage new growth and help plants recover from transplant shock. Many reviewers note how quickly their plants perk up after using it, especially houseplants that need a gentle, consistent feed.

In terms of real-world performance, customers consistently praise its effectiveness and ease of use. It's odorless, which is a huge plus for indoor use where fish emulsion or strong-smelling fertilizers would be unpleasant. The liquid is clear and leaves no residue, and because it's so concentrated, both bottles together can last for months even with frequent watering.

Design and build quality are straightforward. The bottles are small and easy to store, and the dropper tip allows precise measurement. There are no moving parts or complicated instructions. The only potential downside is the small bottle size for those with extensive garden beds, but the high concentration means each bottle goes further than you might expect. Also, if you prefer organic or slow-release options, this synthetic liquid fertilizer may not be for you.

Overall, the Schultz All Purpose Plant Food Plus is a reliable, mess-free fertilizer that delivers visible results. It's especially well-suited for indoor plant owners who want a no-fuss feeding routine. With thousands of positive reviews and a top rating, it's a solid choice for keeping your plants healthy and thriving.

Jobe's Tree Fertilizer Spikes are a convenient, no-fuss solution for feeding deciduous trees and shrubs. Each pack contains 15 pre-measured spikes with a 16-4-4 NPK ratio, designed to provide a continuous supply of nutrients below the surface where roots are most active. This product is ideal for homeowners and gardeners who want to avoid the mess and hassle of traditional granular fertilizers, and it's especially suitable for those with smaller to medium-sized trees and shrubs.

The standout feature is the time-release technology. Once you push a spike into damp soil near the drip line, it gradually breaks down over weeks, releasing nutrients steadily. This eliminates the risk of fertilizer burn and reduces the need for repeated applications. Users report visible improvements in leaf color and overall vigor within a few weeks, and the lack of runoff means you're not wasting product or harming nearby plants. The spikes are also odorless, making them a much cleaner option than many organic or manure-based fertilizers.

In terms of design, the spikes are sturdy and uniform, with a pointed tip that makes insertion easier. However, in very hard or rocky soil you may need to pre-soak the ground or use a tool to create a pilot hole. Each spike feeds for about six weeks, so the 15-spike pack covers a good number of trees for a full season. The 2-pack doubles your coverage, which is convenient for larger yards. No mixing, measuring, or special storage is required.

One honest drawback is cost per application compared to bagged granular fertilizers. For large properties with many trees, the spikes can add up. Also, for very large trees, you may need more spikes than a single pack contains, requiring additional purchases. But for most homeowners with a handful of ornamental trees or fruit trees, the ease of use and precise feeding make it worthwhile.

Overall, Jobe's Tree Fertilizer Spikes deliver on their promise of mess-free, continuous feeding. They are a reliable choice for anyone who values convenience and wants to see healthy, thriving trees without the typical fertilizer headaches. If you have a few trees to care for and prefer a set-and-forget approach, these spikes are an excellent investment.

Schultz Orchid Food 20-20-15 is a liquid concentrate designed specifically for all orchid varieties. This water soluble fertilizer delivers a balanced blend of nitrogen, phosphorus, and potassium along with vital micronutrients. It is ideal for both beginner and experienced orchid growers who want to encourage healthy foliage and abundant blooms.

The formula feeds like nature by dissolving evenly each time you water. Many users report visible improvements in plant health and more consistent blooming after regular use. The included micronutrients support overall vigor, making it a comprehensive feeding solution.

The product comes in a straightforward 10 oz bottle with clear instructions for dilution. It is concentrated, so a single bottle can treat multiple plants over many months. The liquid form allows for precise control over application strength.

One common caution from reviewers is to start with a weaker dilution, especially for sensitive orchids. Overfertilizing can cause leaf yellowing or bloom drop. Patience is key, as results are not immediate but become apparent over several weeks.

Overall, Schultz Orchid Food is a reliable, budget-friendly choice that has earned a loyal following. With proper application, it can help your orchids thrive. It is highly recommended for orchid care.

If you are looking for a straightforward, reliable way to feed your garden without constant attention, the Schultz Nursery Plus Slow-Release Plant Food is a solid choice. This 12-6-6 granular fertilizer is designed to nourish a wide range of plants - from flowers and vegetables to shrubs and trees - for weeks after a single application. It is particularly well-suited for gardeners who prefer a set-it-and-forget-it approach, as the slow-release granules break down gradually with moisture, providing a steady supply of nutrients.

The standout feature here is the balanced NPK ratio of 12-6-6, which delivers moderate nitrogen for leafy growth, a smaller dose of phosphorus for root and flower development, and a moderate amount of potassium for overall plant health. Real-world performance is what you would expect from a reputable brand like Schultz: consistent results with minimal effort. The granules are uniform and easy to sprinkle by hand or with a spreader, and they dissolve slowly so you don't have to worry about nutrient spikes that can damage plants.

In terms of design and build quality, the fertilizer is packaged in a simple, sturdy 3.5-pound bag that includes clear application instructions. The product itself is a dry granule with a mild, earthy scent - nothing off-putting. One practical note: the bag does not have a resealable closure, so you will want to transfer any leftover contents to an airtight container to keep moisture out. But that is a minor inconvenience for a product that otherwise performs reliably.

As for drawbacks, the biggest limitation is the lack of a built-in indicator for when the nutrients are depleted. You will need to track your own schedule or watch for signs that plants need another feeding. Also, while the 12-6-6 ratio is versatile, heavy feeders like roses or fruiting vegetables might benefit from a formula with a higher middle number. That said, for general garden maintenance, this Schultz slow-release plant food gets the job done without fuss.

Verdict: This is a dependable, no-nonsense plant food for gardeners who value simplicity and consistent feeding. It won't wow you with exotic ingredients, but it delivers what it promises - healthy, steady growth with minimal risk of burning. At this price point and with the Schultz reputation, it is a smart buy for anyone maintaining a medium-sized garden or a collection of container plants.

Brand: Schultz

Model Number: SPF48220

NPK Ratio: 12-6-6

Item Form: Granules

Net Weight: 3.5 pounds (56 ounces)

Coverage: Medium (exact coverage depends on application rate)

Release Type: Slow release

Suitable For: Flowers, vegetables, shrubs, trees, container plants

UPC: 089146900917

ASIN: B01JOAST8Q

Miracle-Gro Indoor Plant Food Spikes take the guesswork out of feeding your houseplants. This bundle includes 48 spikes with a balanced NPK ratio of 6-12-6, designed to nourish both flowering and foliage plants like ficus, snake plant, croton, spider plants, and pothos. If you want a low-maintenance way to keep your indoor garden lush and vibrant, these spikes are a solid choice.

The standout feature is the slow-release formula. Each spike feeds your plant continuously for up to two months, depending on the season. In spring and summer, you replace them every 30 days; in fall and winter, you can stretch that to 60 days. This set-it-and-forget-it approach is perfect for busy plant parents or anyone who travels frequently.

Using them is straightforward. You moisten the soil, use the included Miracle-Aerator spike to create a hole, then insert the plant food spike. No mixing, no measuring, no mess. The spikes are designed to be safe for all indoor potted plants when used as directed, so you don't have to worry about burning your plants if you follow the instructions.

One thing to keep in mind is that these spikes release nutrients slowly. If your plant is showing signs of a specific deficiency, you might need a targeted liquid fertilizer for faster correction. Also, some plants that prefer very lean soil, like certain succulents, might not benefit from constant feeding. But for most common houseplants, this product delivers consistent, gentle nutrition.

Overall, Miracle-Gro Indoor Plant Food Spikes are a reliable and convenient solution for maintaining healthy houseplants. They combine the trust of a well-known brand with a practical design that simplifies plant care. If you want to give your indoor garden a steady supply of essential nutrients without the hassle, this product is worth picking up.

If you have trees or shrubs in your yard, you know they need proper nutrition to stay healthy and vibrant. Miracle-Gro Tree and Shrub Plant Food Spikes make that job simple. Each spike delivers a balanced 15-5-10 NPK blend directly to the roots, where plants need it most. This product is designed for deciduous, flowering, and evergreen trees, as well as acid-loving plants like hydrangeas, azaleas, and magnolias. It's a great choice for homeowners who want an easy, no-mess feeding solution that works season after season.

The standout feature here is convenience. Instead of mixing or measuring liquid or granular fertilizer, you just push these spikes into soft, moist soil around the drip line of your tree or shrub. The slow-release formula feeds for months, so you only need to apply twice a year once in early spring and once in mid-fall. Gardeners report seeing richer green leaves and more abundant blooms after using these spikes. The 12-count package covers three trees with a 4-foot drip line or one larger tree with a 12-foot drip line, making it a practical choice for most yards.

Build quality is what you'd expect from Miracle-Gro. The spikes are sturdy and resist breaking during installation, though very hard or rocky soil can make driving them in a challenge. The packaging includes clear instructions and a chart to determine the right number of spikes for your tree's size. One small drawback: the spikes are not intended for summer use. If your tree looks stressed during hot months, you'll need a different product like Miracle-Gro Shake 'N Feed. Also, spikes must be spaced at least 3 feet apart, which might be tricky in tight planting areas.

Overall, these spikes deliver on their promise. They provide targeted, slow-release nutrition that promotes healthy growth and vibrant color with minimal effort. For anyone who wants to keep their trees and shrubs looking their best without a complicated routine, Miracle-Gro Tree and Shrub Plant Food Spikes are a reliable, easy-to-use option. Just remember to apply in spring and fall, and you'll see the difference.