How to Fertilize Lettuce Plants For Healthy Leaves

Written by Naomi Meza


Posted on October 14 2022

If you're lucky enough to have neighbors who grow lettuce in their garden, you probably really appreciate it when they gift you some of their harvest.

Perhaps your favorite use for homegrown lettuce is to toss a nutritious and delicious salad, or maybe you feel that nothing adds just the right finishing touch to your favorite sandwich than a freshly picked lettuce leaf or two.


Related Post: The 5 Best Fertilizers for Beginner Gardeners


However you choose to use it, the taste of homegrown lettuce far surpasses that of its supermarket-sourced counterpart.

Planting lettuce in your own garden means that you won't have to depend on the kindness of your neighbors for your fresh lettuce fix.


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That can be a problem, though, if you don't have enough outdoor living space for a garden.

Fortunately, you can grow your own lettuce indoors using hydroponics, and perhaps best of all, you'll be able to have it all year-round.


Related Post: How to Grow Lettuce in Your Home Garden


Whether you do so the old-school way or grow it using an indoor hydroponics system, here's what you need to know about growing lettuce successfully:

What is the Best Organic Fertilizer for Lettuce? 

Leafy green lettuce plants grown in soil

Lettuce requires equal or nearly equal amounts of the following three essential nutrients to perform its best in the garden:

  • Nitrogen
  • Potassium
  • Phosphorus


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Nitrogen helps lettuce grow quickly, potassium promotes disease resistance and helps lettuce plants grow large, and phosphorous helps build root and vascular systems as well as encourages strong leaf growth.

Lettuce fertilizer should also include micronutrients such as calcium and magnesium.

Our experts at Greenway Biotech have created a natural fertilizer for lettuce that contains just the right blend of nutrients that lettuce needs to grow strong and tasty.

Our lettuce fertilizer contains the right NPK for healthy plant growth, but what really sets our formula apart from others is that we've added key micronutrients like: 

  • Boron 
  • Copper 
  • Iron 
  • Molybdenum 
  • Manganese 
  • Zinc 

Having these trace minerals in chelated form ensures your plant can easily absorb them from the start rather than having to wait for the minerals to break down first. 

Quick and easy access to micronutrients means your lettuce crop can remain vibrant, strong and sweet while preventing disease. 

5 star review for greenway biotech lettuce fertilizer 8-15-36 plus micronutrients for hydroponic lettuce and soil grown lettuce

Is Lettuce Fertilizer Suitable for All Plants or Vegetables?

Graphic about greenway biotech lettuce 8-15-36 fertilizer plus micronutrients for hydroponic lettuce and soil grown lettuce 

Different types of plants, including flowers, herbs, vegetable, shrubs, and trees, have varying nutritional needs.

Because nitrogen promotes leafy, green foliage, it's far from ideal for plants that are prized for their flowers.

Some types of vegetables also thrive when an organic lettuce fertilizer is used, however, such as other leafy greens.

Graphic with 5 star review of greenway biotech lettuce 8-15-36 fertilizer plus micronutrients for hydroponic lettuce and soil grown lettuce plants

A short list of these include spinach, collard greens, kale, Swiss chard, broccoli, and endives.

You can also use this our specially formulated lettuce fertilizer to grow microgreens.

Does Lettuce Need to Be Watered Every Day?

Person in pants and checkered rain boots watering lettuce plants with orange watering can 

Because lettuce grows quickly, it requires more water than many other types of vegetables.

Furthermore, lettuce has a fibrous, shallow root system, which responds better to frequent watering than it does to less frequent, deep watering.

Although you might be able to skip a day now and then on cool, overcast days, in most cases, lettuce should be watered every day.

On hot days, you'll probably have to water your lettuce more than once per day.


Related Post: How to Grow Lettuce in Your Home Garden

Keep in mind that because lettuce is a cool-season crop, part of the function of frequent watering is to keep the root system cool during warm and hot weather.

If you decide to grow lettuce in your garden and live in a location where seasonal daytime temperatures are routinely above 80 degrees, plant two crops of lettuce — one in the spring, and the other in fall, and skip the hottest part of the summer in July and August.

Grow With Greenway

Woman in blue overalls planting lettuce plants in soil using greenway biotech lettuce 8-15-36 fertilizer and organic blood meal 13-0-0 fertilizer

No matter what time of year you start your own seeds using indoor hydroponics, you could be enjoying your own freshly picked lettuce in a matter of weeks.

 To view the full benefits of our water soluble Lettuce Fertilizer 8-15-36 Plus Micronutrients, click here and you'll be tossing a fresh salad before you know it.



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