How many spikes do I need per plant?

The number depends on the pot diameter; typically, a 4-inch pot needs one spike, while a 6-inch pot requires two.

Are these better than liquid fertilizer?

Spikes are better for convenience and preventing over-fertilization, whereas liquids provide a more immediate nutrient boost.

Can I use these for succulents?

While safe, succulents generally require less frequent feeding and different NPK ratios, so use sparingly.

When is the best time to use them?

They are most effective during the active growing seasons of spring and summer.

Where is the Miracle-Gro Plant Food Spikes cheapest?

At Walmart, for $5.47, as of our latest check.

Miracle-Gro Plant Food Spikes

Best price now

$5.47at WalmartObserved at 11:35 PM

Prices are checked against each store and labelled with when.

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Our take on the Miracle-Gro Plant Food Spikes

These pre-measured fertilizer spikes provide a 6-12-6 NPK ratio specifically formulated for indoor houseplants. They release nutrients for up to 60 days to promote lush foliage and blooms without the mess of liquid mixing. At $5.47 at Walmart as of November 7, they are an affordable entry-point for routine plant maintenance.

Best forBeginner indoor gardenersPotted flowering houseplantsLow-maintenance feeding schedules

Pros

No measuring or mixing required
Continuous feeding for two months
High phosphorus content for root and bloom health
Safe for all indoor plant varieties

Cons

Can cause fertilizer burn if placed too close to the stem
Hard soil makes insertion difficult
Not ideal for large outdoor containers

Miracle-Gro Plant Food Spikes prices at every store

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In stock
$5.47Observed at 11:35 PM
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Miracle-Gro Plant Food Spikes price history

Lowest price we've seen: $5.47 on Nov 7 at Walmart. Tracked across 1 store since Nov 7.

What reviewers say

Users appreciate the simplicity and effectiveness of these spikes for keeping indoor greenery vibrant. Most find them much cleaner than liquid alternatives, though some note the spikes can crumble in dry soil.

What people mention

ConveniencePraisedOwners love that they can simply push the spike into the soil and forget about it for two months.
DurabilityMixedWhile the nutrients last, the physical spikes are prone to snapping if the soil is not pre-moistened.
Plant GrowthPraisedReviewers frequently mention deeper green leaves and more frequent flowering after use.

Specifications

Questions and answers

How many spikes do I need per plant?: The number depends on the pot diameter; typically, a 4-inch pot needs one spike, while a 6-inch pot requires two.
Are these better than liquid fertilizer?: Spikes are better for convenience and preventing over-fertilization, whereas liquids provide a more immediate nutrient boost.
Can I use these for succulents?: While safe, succulents generally require less frequent feeding and different NPK ratios, so use sparingly.
When is the best time to use them?: They are most effective during the active growing seasons of spring and summer.
Where is the Miracle-Gro Plant Food Spikes cheapest?: At Walmart, for $5.47, as of our latest check.