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Everything You Need to Know About Growing Spinach Indoors

Published on
May 17, 2024
Everything You Need to Know About Growing Spinach Indoors
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Are green onions and scallions the same thing?

Yes, green onions and scallions refer to the same vegetable. The terms are used interchangeably in different regions.

Can I regrow green onions from kitchen scraps?

Yes, you can regrow green onions from kitchen scraps. Place the white bulb ends with roots in a glass of water, ensuring the roots are submerged. Change the water regularly, and new growth will emerge from the top.

How do I prevent my green onions from bolting?

Bolting occurs when green onions prematurely produce a flower stalk. To prevent bolting, avoid planting them during the hottest part of the year and keep the soil consistently moist.

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Everything You Need to Know About Growing Spinach Indoors

spinach inside a container

Being all about sustainable living, I decided to give gardening a shot, and my first experiment was with spinach. Back then, as a beginner, I had my doubts about how it would turn out. But let me tell you, diving into spinach growing was a game-changer! If you're a beginner on the hunt for a green that's easy to grow, you've landed in the right spot. Stick around, and I'll walk you through everything you need to know about growing spinach indoors. It's simpler than you might imagine!

Getting Started: Choosing the Right Varieties

infographics and about the top spinach varieties for beginner indoor gardening

When it comes to growing spinach indoors, choosing the right varieties is important. As a beginner, choose varieties that are known for their adaptability and ease of growth. Some excellent choices include:

  1. Baby Spinach: This variety is incredibly popular for its tender leaves and mild flavor. Baby spinach grows quickly and is perfect for salads, smoothies, and sandwiches. It's also well-suited for indoor cultivation due to its compact size.
  2. Bloomsdale: Known for its crinkled leaves and rich, earthy flavor, Bloomsdale spinach is a favorite among gardeners. It's easy to grow and adapts well to indoor environments, making it an excellent choice for beginners.
  3. Space Spinach: As the name suggests, Space spinach is ideal for small spaces and container gardening. It produces abundant foliage in a compact form, making it perfect for indoor cultivation. Plus, it has a delicious, sweet flavor that pairs well with a variety of dishes.
  4. Tyee: Tyee spinach is a hardy variety that is resistant to bolting, making it an excellent choice for beginners. Its dark green, savoyed leaves are packed with flavor and nutrients, making it a nutritious addition to salads, soups, and stir-fries.
  5. Melody: Melody spinach is prized for its bolt-resistant nature and sweet, mild flavor. It produces large, glossy leaves that are perfect for fresh eating or cooking. Melody spinach thrives in containers and is well-suited for indoor cultivation, making it an excellent choice for beginner gardeners.

Setting Up Your Indoor Spinach Garden

setting up your indoor spinach garden steps

Step 1: Gather Your Supplies

Before you get started, gather all the necessary supplies:

  • Spinach seeds or seedlings
  • Containers with drainage holes (pots, trays, or window boxes)
  • High-quality potting mix
  • Compost or organic matter (optional)
  • Watering can or spray bottle
  • Grow lights (optional, if natural light is limited)
  • Balanced liquid fertilizer
  • Gardening gloves and hand trowel

Step 2: Choose the Right Container

a stack of pots for growing spinach

When it comes to growing spinach in containers, remember that they have shallow roots, so you don't need anything too deep. A container that's at least 6 inches deep is perfect! Get creative with your choice of containers—plastic or ceramic pots work great, and you can even upcycle things like milk cartons or plastic bottles. Just give them a good clean and make sure they have drainage holes at the bottom to prevent waterlogging.

Step 3: Prepare the Soil

person preparing soil for healthy plant growth

Fill the containers with a high-quality potting mix that is well-draining and nutrient-rich. This plant grows best in well-draining soil that is rich in organic matter. You can either go with a store-bought mix or whip up your own blend using peat moss, vermiculite, and perlite. Throw in some compost or worm castings for an extra nutritional boost.

Don't forget to leave a little room at the top of the container—about an inch should be enough to give room for watering.

Step 4: Plant Your Seeds or Seedlings

person holding seeds for planting

If planting seeds:

  • Sow the spinach seeds about 1/2 inch deep in the soil, spacing them evenly apart to allow room for growth. You can plant multiple seeds per container and thin them out later if necessary.
  • Lightly cover the seeds with soil and water gently to moisten the soil.

If using seedlings:

  • Carefully remove the seedlings from their nursery containers and gently loosen the roots.
  • Dig a small hole in the soil of your chosen container and place the seedling in the hole.
  • Fill in the hole with soil and press gently around the base of the seedling to secure it in place.
  • Water the seedlings thoroughly to help them settle into their new home.

Step 5: Provide Adequate Light

spinach in a pot growing by a windowsill

To keep your spinach plants thriving, they'll need a good dose of sunlight—about 6 hours of sunlight a day should do the trick. So, find a sunny spot near a south-facing window where they can soak up those rays. If natural sunlight is in short supply, don't sweat it! You can always rely on artificial lighting like fluorescent or LED grow lights. Just hang them about 6 inches above your plants and leave them on for 12-16 hours a day.

Step 6: Water and Fertilize Regularly

child watering a spinach plant and having fin

When it comes to watering, the goal is to keep the soil consistently moist without drowning it. I find that giving them a drink once a day, especially in the morning, works well. This way, the leaves have time to dry out before nightfall, which helps prevent any moisture-related issues. But hey, you don't need to stick to a strict schedule—just check the top inch of soil every now and then. If it feels dry, it's time to water. And remember, aim for the base of the plants to keep those leaves nice and dry.

As for feeding your spinach, a little fertilizer goes a long way. Every two weeks, give them a balanced fertilizer that's got equal parts nitrogen, phosphorus, and potassium. If you're into organic options, stuff like fish emulsion or kelp meal works great too. Just follow the instructions on the packaging to make sure you're giving them the right amount of nutrients without overdoing it. Easy-peasy, right?

Step 7: Monitor and Maintain

person monitoring and maintaining spinach plants

Keep an eye on your plants for signs of growth and development. Growing spinach indoors can be a fun and rewarding experience. However, it is essential to provide proper care to ensure healthy growth and a bountiful harvest. In this section, I will cover some essential spinach plant care tips.

Temperature Control:

Spinach plants prefer cooler temperatures between 50-70°F (10-21°C). It is essential to keep the plants away from direct sunlight and heat sources. If things start to warm up, a little breeze from a fan can help keep the air circulating and the temperature just right. But if it gets too chilly—below 50°F (10°C)—just tuck them in under a cloth or plastic sheet to keep them snug and protected from the cold

Pruning:

If you notice your spinach plants starting to bolt (produce flowers and seeds) prematurely, you can simply trim off those flowering stems to redirect the plant's energy back into leaf production. And while you're at it, if you spot any damaged leaves, feel free to trim those off too—it'll help keep your spinach looking its best.

Now, if you find your spinach seedlings are a bit too cozy together and things are getting crowded, it's time for a little thinning out. But no need to yank those extra seedlings out and risk disturbing the roots of their neighbors. Just grab your trusty scissors and snip off the excess seedlings right at soil level. It's a gentle way to give the remaining plants a bit more breathing room to stretch out and grow.

Disease and Pest Management:
Diseases:
  1. Powdery Mildew:
    • Symptoms: White, powdery spots or patches on the leaves.
    • Prevention and Treatment: Improve air circulation around your plants by spacing them properly and avoiding overcrowding. Water the soil directly and avoid overhead watering to keep the foliage dry. If powdery mildew appears, remove and destroy affected leaves, and treat with a fungicidal spray labeled for powdery mildew.
  2. Downy Mildew:
    • Symptoms: Yellow or brown spots on the upper surface of leaves, with a fuzzy gray or purple growth on the underside.
    • Prevention and Treatment: Provide adequate air circulation by spacing plants properly and avoiding overcrowding. Remove and destroy affected leaves, and treat with a copper-based fungicide if necessary.
  3. Fusarium Wilt:
    • Symptoms: Yellowing and wilting of leaves, followed by stunted growth and eventual plant death.
    • Prevention and Treatment: Plant disease-resistant spinach varieties when possible. Avoid overwatering and waterlogged soil, as Fusarium wilt thrives in damp conditions.

Pests:

  1. Aphids:
    • Symptoms: Clusters of tiny, soft-bodied insects on the undersides of leaves, causing leaves to curl or distort.
    • Prevention and Treatment: Use a strong jet of water to dislodge aphids from plants, or wipe them off with a damp cloth. If necessary, treat with insecticidal soap or neem oil.
  2. Spider Mites:
    • Symptoms: Fine webbing on the undersides of leaves, yellow or stippled foliage, and tiny, moving dots on the leaves.
    • Prevention and Treatment: Increase humidity around plants by misting them regularly or placing a humidifier nearby. Prune and remove heavily infested leaves, and treat with insecticidal soap or neem oil.
  3. Leaf Miners:
    • Symptoms: Serpentine tunnels or trails on the leaves, caused by the larvae of small flies.
    • Prevention and Treatment: Remove and destroy affected leaves to prevent further spread of leaf miner larvae. If necessary, treat with insecticidal soap or neem oil.

General Tips for Disease and Pest Management:

  • Practice good sanitation by removing and disposing of plant debris, fallen leaves, and weeds regularly to reduce the risk of disease and pest infestations.
  • Monitor your spinach plants regularly for signs of disease or pest damage, and take action promptly to prevent further spread.
  • Use organic and environmentally friendly methods whenever possible to control pests and diseases, minimizing the use of chemical pesticides and fungicides.

Step 8: Harvesting and Storage

harvesting spinach and gathering them using a straw basket

Harvesting

When it comes to harvesting spinach, timing is key. You want to pick the leaves when they are at their peak, before they start to wilt or turn yellow. You can start harvesting spinach as soon as the leaves are big enough to eat, which is usually around 4-6 weeks after planting.

To harvest, simply use a pair of scissors or garden shears to cut the leaves off at the base of the stem. You can either harvest the entire plant at once or just pick a few leaves at a time. If you choose to harvest the entire plant, be sure to cut it off at ground level.

It's important to note that spinach is a cool-season crop, which means it doesn't do well in hot weather. If you notice that your spinach is starting to bolt (produce flowers), it's time to harvest it before the leaves become bitter

Storage Solutions

Once you've harvested your spinach, it's important to store it properly to keep it fresh for as long as possible. Here are some storage solutions to consider:

  • Rinse the leaves in cold water and pat them dry with a paper towel.
  • Store the leaves in a plastic bag or container with a damp paper towel to keep them moist.
  • Alternatively, you can freeze your spinach for later use. Simply blanch the leaves in boiling water for 2-3 minutes, then plunge them into ice water to stop the cooking process. Drain the leaves and freeze them in an airtight container or freezer bag.

Step 9: Enjoy Your Homegrown Greens!

preparing spinach on the table for eating

Congratulations, you've successfully planted spinach indoors and now have a bountiful supply of fresh, nutritious greens at your fingertips. Throw your homegrown spinach into salads, smoothies, sandwiches, soups, or stir-fries for an easy and healthy boost to any meal.

Benefits of Growing Spinach Indoors

Growing spinach indoors has numerous benefits that make it a worthwhile endeavor for any home gardener. Here are some of the benefits of growing spinach indoors:

1. Year-Round Availability

It allows you to have fresh spinach all year round, regardless of the season. This is especially useful for those who live in areas with harsh winters or hot summers, where outdoor gardening may be difficult or impossible.

2. Control Over Growing Conditions

You have complete control over the growing conditions, including temperature, humidity, and lighting. This allows you to create the ideal environment for your spinach to thrive, resulting in healthier and more flavorful plants.

3. Space-Saving

Indoor gardening is a great option for those who have limited outdoor space. With a small indoor garden, you can grow a significant amount of spinach without taking up valuable outdoor real estate.

4. Health Benefits

Spinach is a highly nutritious vegetable that is packed with vitamins, minerals, and antioxidants. By growing them indoors, you can ensure that it is free from harmful pesticides and other chemicals, making them even healthier for you and your family.

FAQs

Q: Can I reuse the soil from my indoor spinach containers for future plantings?

A: While you can technically reuse soil from your indoor spinach containers for future plantings, it's essential to refresh and replenish the soil to ensure optimal plant growth. Remove any remaining roots or debris from the soil, and amend it with fresh compost or potting mix to replenish nutrients. Additionally, consider rotating your crops or practicing crop rotation to minimize soil depletion and reduce the risk of disease buildup.

Q: Are there any companion plants that pair well with indoor-grown spinach?

A: Yes, several companion plants pair well with indoor-grown spinach and can help promote healthy growth while deterring pests. Some examples include lettuce, radishes, carrots, and herbs like basil and dill. These companion plants can provide shade, attract beneficial insects, and enhance the overall diversity and productivity of your indoor garden.

Q: Can I harvest multiple times from the same plant?

A: Yes, you can harvest multiple times from the same plant by picking the outer leaves as they mature while allowing the inner leaves to continue growing. This method, known as "cut-and-come-again," allows you to enjoy a continuous harvest of fresh spinach leaves over an extended period.