how to harvest spinach Seeds 2023

harvest spinach

How to Harvest Spinach Seeds: A Comprehensive Guide

Learn how to harvest spinach seeds effectively with this comprehensive guide. Get insights from experts, discover essential tips, and master the art of seed saving to ensure a bountiful harvest year after year.


If you are an avid gardener or someone who loves growing vegetables, spinach is likely to be a part of your kitchen garden. Spinach is not only a nutrient-packed leafy green but also a great addition to salads, smoothies, and various dishes. While growing spinach is relatively easy, harvesting the seeds can be a bit trickier. In this article, we will take you through a step-by-step guide on how to harvest spinach seeds successfully, ensuring a steady supply of fresh, homegrown spinach for years to come.

How to Harvest Spinach Seeds?

Understanding the Seed-Saving Process

Before we dive into the specifics of harvesting spinach seeds, it’s essential to grasp the basics of seed saving. Seed saving is the act of collecting seeds from your plants to grow new ones in the future. It not only promotes sustainability but also allows you to maintain the characteristics of specific plant varieties you love.

Choosing the Right Spinach Plants

When planning to harvest spinach seeds, the first crucial step is to select the right plants. Opt for healthy, vigorous spinach plants that exhibit desirable traits such as disease resistance, vibrant foliage, and excellent taste. By choosing the best plants, you ensure that the next generation of spinach will be equally remarkable.

Allowing Spinach to Bolt

To harvest seeds, spinach plants must reach maturity and bolt. Bolting is the natural process where the plant transitions from the vegetative phase to the reproductive phase. During bolting, the plant produces a flower stalk, and this is when the seeds start to develop.

Identifying Seed-Ready Spinach

To determine if the spinach seeds are ready for harvesting, observe the seed pods. The seed pods will change color from green to light tan or brown when they are ripe. Make sure not to harvest seeds too early, as immature seeds might not germinate successfully.

Harvesting the Spinach Seeds

To harvest the seeds, gently remove the seed pods from the plant. A good technique is to hold a container or bag beneath the seed pod and then crush the pod with your fingers. This will release the seeds into the container. Alternatively, you can wait for the seed pods to dry on the plant and then collect them.

Threshing and Cleaning the Seeds

Once you have collected the seed pods, it’s time to separate the seeds from the chaff. Thresh the pods by rubbing them gently between your hands or by using a cloth. After threshing, use a sieve or fine mesh to remove the remaining debris and separate the clean seeds.

Storing the Spinach Seeds

To maintain the viability of the harvested seeds, store them properly. Place the cleaned seeds in a labeled envelope or airtight container. Store the container in a cool, dry, and dark place. Properly stored spinach seeds can remain viable for up to three years.

Understanding Spinach Cultivation

Selecting the Right Spinach Variety

Choosing the appropriate spinach variety is crucial for successful cultivation. Some popular spinach varieties include Bloomsdale, Malabar, and Baby Spinach. Consider factors such as climate, soil type, and your preferences before selecting the best-suited variety.

Preparing the Soil

Spinach thrives in well-draining, nutrient-rich soil. Begin by loosening the soil to a depth of 8-10 inches and remove any weeds or debris. Incorporate organic matter, such as compost, to enhance soil fertility and structure. Aim for a slightly acidic to neutral soil pH level ranging from 6.0 to 7.0.

Sowing Spinach Seeds

Sow spinach seeds directly into the prepared soil, preferably in early spring or fall. Create furrows or shallow trenches with a spacing of about 12-18 inches between rows. Place the seeds approximately 1 inch apart and cover them with a thin layer of soil. Water gently to keep the soil moist.

Proper Watering Techniques

Spinach requires consistent moisture throughout its growth cycle. Water the plants regularly, keeping the soil evenly moist but not waterlogged. Avoid overhead watering, as wet foliage can lead to disease issues. Drip irrigation or soaker hoses are ideal for maintaining proper moisture levels.

Providing Adequate Sunlight

While spinach prefers cool temperatures, it still requires ample sunlight for optimal growth. Ensure the plants receive at least 4-6 hours of sunlight each day. In hotter regions, consider providing partial shade during the hottest part of the day to prevent wilting.

Nurturing Spinach Plants

Thinning the Seedlings

Once the spinach seedlings have emerged and developed their first true leaves, thin them to ensure proper spacing. Leave about 3-4 inches of space between individual plants to give them room to grow and access sufficient nutrients.


Regularly fertilize the spinach plants to promote healthy growth. Opt for balanced, slow-release fertilizers that contain essential nutrients like nitrogen, phosphorus, and potassium. Avoid over-fertilizing, as excessive nitrogen can lead to leafy growth with reduced seed production.

Managing Pests and Diseases

Monitor your spinach plants regularly for any signs of pests or diseases. Common pests that affect spinach include aphids, leaf miners, and slugs. Utilize organic pest control methods or insecticidal soaps to manage infestations effectively. For diseases, ensure good air circulation around plants and remove any infected leaves promptly.

Extending the Growing Season

To enjoy a continuous spinach harvest, consider successive planting every few weeks. This practice ensures a steady supply of fresh spinach throughout the growing season. Additionally, you can extend the harvest by covering the plants with row covers or cold frames during colder months.

Harvesting Spinach and Collecting Seeds

Harvesting Spinach Leaves

Harvest spinach leaves when they reach a suitable size, typically around 6-8 inches in length. Pick the outer leaves first, allowing the inner leaves to continue growing. Use a sharp knife or scissors to cut the leaves near the base, taking care not to damage the plant’s crown.

Allowing Some Plants to Bolt

When the growing season is about to end, consider allowing some spinach plants to bolt, meaning they will produce flowering stalks. These stalks will eventually develop seeds. Bolted spinach leaves may not be as tender and flavorful, but they are essential for seed production.

Collecting Spinach (Palak) Seeds

Once the flowering stalks have matured and dried, it’s time to collect spinach seeds. Gently shake or rub the dried seed pods over a clean container to release the seeds. Remove any debris or chaff, and store the collected seeds in a dry, airtight container.

Can I harvest spinach seeds from store-bought spinach?

Yes, you can harvest spinach seeds from store-bought spinach, but the success rate may vary. Many commercially sold spinach varieties are hybrids, which means the seeds may not grow true to the parent plant’s characteristics. To ensure a more predictable outcome, it’s best to save seeds from open-pollinated or heirloom varieties.

When is the best time to harvest spinach seeds?

The best time to harvest spinach seeds is when the seed pods have turned light tan or brown, indicating they are mature and ready for harvesting. If the seeds are collected too early, they may not be viable for planting.

How do I prevent cross-pollination in my spinach plants?

To prevent cross-pollination between different spinach plants, isolate different varieties by at least 20 feet or use physical barriers like row covers. If you plan to save seeds from multiple spinach plants, ensure they belong to the same variety.

Can I grow spinach seeds harvested from the previous year?

Yes, spinach seeds harvested from the previous year can be grown, provided they have been stored properly. Ensure the seeds have been kept in a cool, dry place away from direct sunlight to maintain their viability.

Can I eat the spinach after letting it bolt and produce seeds?

While the spinach leaves might become bitter after the bolting process, they are still edible. However, most gardeners prefer to let some plants bolt to produce seeds while keeping others for their tender leaves.

How do I know if the collected seeds are viable?

To test the viability of the collected spinach seeds, conduct a simple germination test. Place a few seeds on a damp paper towel and keep them in a warm place. If most of the seeds sprout within a week, they are viable and suitable for planting.

Harvesting spinach seeds is a rewarding experience that allows you to become more self-sufficient in your gardening endeavors. By following the step-by-step guide in this article, you can confidently save spinach seeds and ensure a continuous supply of fresh, homegrown spinach year after year. Remember to select healthy plants, wait for the seed pods to mature, and store the seeds correctly to guarantee successful germination. Happy gardening and seed saving!

The leaves or seeds planted in early spring, about 8-10 weeks before the last expected frost (early March here in Pennsylvania), will germinate and harvest in late spring. This crop can also be overwintered (you will learn how to do this later in this article ) for a winter or spring crop. You can cut the leaves 2-3 inches above the ground and allow them to grow before harvesting again, which will ensure a stable How to harvest spinach throughout the season.

how to harvest spinach Seeds 2023
Photo by Rodolfo Quirós on

You can also harvest the outer leaves, letting the inner ones continue to grow, or you can harvest the entire plant at once. One way of doing this is to start first collecting the outermost and oldest leaves and then gradually reaching the center of the plant as it matures. This is the way How to harvest spinach often allows it to sprout and give you another partial harvest. 

Once the spinach is harvested, all you have to do is water it and wait patiently for the next harvest. This is a great method of picking spinach in bulk if you want the plant to keep growing and produce new leaves, or if you only need a few leaves for a smoothie or a little lunch. The great thing about growing spinach is that you can harvest it as micro greens, young or mature leaves, and they all taste good raw. 

When you’re growing spinach in your garden for use in fresh spring salads or to warm up autumn fries, knowing when and how to harvest spinach can help you increase your crop growth and get more food from your plants. Harvesting spinach isn’t much different from harvesting beets and you have several choices if you’re growing in the spring or fall. 

If you need leaves of spinach, you can harvest them when they are about 2 inches long; in general, young spinach is great to eat raw or lightly roasted because it is so tender; if you plan on cooking spinach, you can cook it or freeze it; you will get the best yield if you wait for the leaves to grow larger – 4 inches in length or more.

The ideal size for picking spinach is a plant that is at least 6 inches high and 2 to 3 inches long some leaves may even be larger but as long as the plant is not fixed (the seed is not fixed), you can eat it. 

You can tell that your spinach plants will collapse when the outside temperature reaches 75 degrees Fahrenheit and/or you see a stem in the foliage. Usually, when spinach plants have multiple leaves and are 4-6 inches tall, you can harvest them, however, depending on whether you want spinach or ripe leaves. According to the University of Wisconsin, you can harvest individual spinach leaves when they reach the mature size typical of their variety and after the plant has produced at least six true leaves. 

It is best to harvest the old leaves first so they don’t get tough and bitter and allow the young leaves to reach a mature size that is 3 to 6 inches for most varieties because this requires a longer and cooler growing season. The seeds are sown in late fall, so it’s time to harvest the spinach in about a month or six weeks. 

When you grow young spinach, it will be ready to harvest when its leaves are about the size of an American quarter to the width of a golf ball. If you are growing mature spinach leaves for harvest, wait until the leaves are thick, wide, and often curled (although not all varieties produce shriveled leaves). The outer leaves are used when harvesting young spinach or ripe spinach, but we’ll discuss this in more detail later in this article. 

Spinach can be harvested for both tender vegetables and larger, more mature leaves. The best part is that Malabar spinach leaves or sprouts can be eaten raw or cooked. Unfortunately, spinach cannot grow from cuttings because the leaves and stems do not form new roots. 

Unlike many other green plants, spinach does not develop from cuttings because the leaves and stems do not form new roots. Spinach regenerates leaves from the growing point, which is the crown of the plant, where the stems connect to the root system very close to the soil surface. When harvesting, collect the leaves of the plant with one hand and cut the stems with a serrated knife, making sure the cut is above the crown (where all the stems are located).

Use this method to expect the plant to grow new leaves about 2 weeks after harvest so that you can repeat the same process again. When harvesting young plants, make sure you don’t take more than 25-30% at one plant at a time to ensure that your plant can continue to bear fruit.

The growing Protip Spinach loves to grow in full sun but can tolerate partial shade (and even enjoy) during the hottest part of the day in late spring or early summer.

If you have dense mulch around your spinach, move it back to reveal the plant’s growth point. Pinch, cut, or trim the stem of the leaf at the base of the plant but just above the soil level. Alternatively, cut the entire spinach head 2 inches above the soil surface with a harvesting knife. 

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