Do you just stick these by the base of the bush? How long do they last?

Yes you will want to stick it near the base of the bush. They seemed to last about 4-6 weeks on my plants. And my roses have never done better.

can it be used for rose of sharon

They are not quite the same type of plant. Jobes makes an all-purpose spike, which is what the rose of sharon is supposed to get. I wouldn't over fertilize either, since it will promote new growth, but not necessarily blooms. Now is a good time, early spring.

Can this be applied with the initial Spring fertilizer timeline of roses, or should it be used separately (later)?

You can use in spring by itself . . .I would not recommend combining with additional fertilizer. The stakes are large and depending on the size of the roses, you use more than one for each bush.

Do these work on knock out roses?

I feed my Knockouts 10 10 10 and they look fantastic. I use the Jobe's spikes on my hybrid roses and climbers. I feel sure the knockouts would also love them.

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Jobe's Rose Fertilizer Spikes, Easy Plant Care Plant Fertilizer for Rose, Hydrangea, Hibiscus, Azalea, and Other Flowering Shrubs, 10 Count

Product ID: 3764354

Details

Brand
Jobe's
Global Trade Identification Number
Item Form
Sticks
Item Weight
0.45 Pounds
Specific Uses For Product
Plant Growth

⏳8 weeks continuous feeding

🌿9-12-9 NPK nutrient balance

🧴Pre-measured, mess-free spikes

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Description

🌹 Feed your roots, flaunt your blooms — effortlessly!

SEASONAL SMART CARE - Apply early spring to kickstart new growth and keep your garden the envy of your neighborhood.
ROOT FOCUSED FORMULA - Works underground at the roots for maximum nutrient absorption and healthier plant growth.
LONG LASTING BLOOM BOOST - Feeds your flowering shrubs continuously for 8 weeks, supporting vibrant, abundant blooms.
PRECISION NUTRIENT DELIVERY - Pre-measured spikes ensure no over-fertilizing, giving your roses exactly what they need.
MESS FREE SAFE APPLICATION - No runoff, no smell, and safe around kids and pets—garden care made effortless.

Jobe's Rose Fertilizer Spikes deliver a perfectly balanced 9-12-9 NPK formula directly to the roots, providing 8 weeks of continuous nourishment for roses and flowering shrubs. Designed for easy, mess-free application, these pre-measured spikes eliminate runoff and odors, making them safe for families and pets. Ideal for early spring use, they promote lush foliage and vibrant blooms, transforming your garden into a stunning floral showcase.

Specifications

ASIN	B0000BYCPP
Best Sellers Rank	#15,150 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #507 in Garden Fertilizers
Brand Name	Jobe's Organics
Coverage	Medium
Customer Reviews	4.6 4.6 out of 5 stars (3,505)
Global Trade Identification Number	00073035040020
Item Form	Sticks
Item Type Name	Rose
Item Weight	0.45 Pounds
Manufacturer	Jobe's
Mixing Ratio	9-12-9
Model Number	04102
Number of Items	1
Part Number	4102
Specific Uses For Product	Plant Growth, Root Development, Seed Development, Soil Conditioning
Target Species	Rose and flower
UPC	073035040020
Unit Count	10.0 Count
Warranty Description	Warranty

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$27.86

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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