Free shipping on orders over $15

Copper Sulfate for Plants

Copper sulfate micronutrient for healthy growth and strong roots. Corrects copper shortfalls in sandy, peaty, and heavily limed soils.

4.6 · 1,600+ reviews on Amazon
Size

$2.99 flat shipping · FREE over $15

30-day money-back guarantee 1 million+ growers served Made in the USA

Works for copper-deficient crops

  • wheat and grains
  • onions
  • carrots
  • lettuce
  • spinach
  • citrus
  • tomatoes
  • sandy-soil gardens

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Supports healthy, resilient roots that absorb nutrients more effectively.

What's inside your bottle — macronutrients, core minerals, micronutrients, and natural kelp

How to use

  1. Mix

    Shake Well and Add 1 tsp per quart (32 oz) of water.

  2. Feed

    Water your plants as normal. Spring & summer: every 1–2 weeks. Fall & winter: every 4 weeks.

  3. Grow

    Watch how your plants thrive!

Frequently asked questions

How do I know my plants need copper?

Wilting or curling new leaves, pale or twisted tips, and poor grain or seed set point to copper shortage. It is most common in sandy, peaty or heavily limed soils.

How long will one bottle last?

At 1 tsp per quart, the 8 oz bottle makes about 48 watering cans of feed. For a typical shelf of 10–15 plants fed every 1–2 weeks in season, that's several months of feeding — and the 32 oz bottle four times that.

Is copper sulfate safe to use on food plants?

Yes at the labeled rate as a micronutrient. Copper builds up in soil, so use it only where a deficiency is likely and do not exceed the directed amount or frequency.

Do I still need a regular fertilizer?

Yes. This targets one shortfall; your regular feed supplies the nitrogen, phosphorus and potassium that drive growth. Use the two together.

How do I apply it?

Water it into moist soil at the labeled rate, or use it as a foliar spray in the morning or evening for a faster response on the leaves.

Which plants need it most?

Wheat and grains, onions, carrots, lettuce and spinach are the most common cases, along with anything showing the deficiency signs above. It suits edible and ornamental plants alike.

When will I see results?

Deficiency symptoms ease on new growth within two to three weeks; leaves that are already damaged will not recolor, but the next ones will come in healthy.

Let's Start Growing!

Choose your size
Copper Sulfate for Plants $11.99