Spinach is an annual that grows to maturity in about 25-40 days. It is a hardy cool-season crop that does best at temperatures of 60 to 65ºF, but can withstand temperatures as low as 20ºF. Spinach is intolerant of temperatures above 77ºF, these warm temperatures combined with long days initiate the plants reproductive stage, causing it to bolt or flower prematurely. That means that spinach thrives when planted early in the spring for a late spring harvest, and late in the summer for a fall harvest.
Hey guys! We’re so grateful for the sustaining contributions from our Patreon supporters and the community that you’re helping to build in our Club EB Slack group. We seriously could not continue to make this podcast without your continued support! This podcast is our passion project and we love sharing all of this gardening know-how will all of you. Today we are asking for you to consider supporting the podcast in a different way - with a one-time contribution during our summer fund drive! If you appreciate our mission to inspire everyone to grow their own fruits and vegetables, please consider showing your support with a donation. All proceeds go directly towards the Encyclopedia Botanica Podcast and will allow us to keep creating educational gardening content. The fund drive runs through the end of August, and every little bit helps, so please consider making a one-time contribution today!
Thanks, Hilary and Kellie
HOW TO LISTEN:
- Subscribe in iTunes (or your favorite podcast player) to have our podcasts sent directly to your device.
- Listen right now in your browser by clicking above.
In this episode, we discuss:
- The 3 basic types of spinach
- Germination tips for sowing spinach in summer for a Fall harvest
- Different ways you can harvest spinach
- How to overwinter spinach
There are 3 basic types of spinach, savoy, flat leaf, and semi-savoy. Savoy-types have crinkled leaves and are usually grown in the fall because the leaves are thicker than other types so it holds up well in cold weather. Flat leaf varieties have smooth, broad leaves and tend to be grown in the spring.
Most spinach varieties germinate well in cool weather, but seeding for winter production occurs at the warmest time of the year, when spinach traditionally performs poorly. Keeping the seeds moist helps cool down the soil temperature, which improves germination of direct-seeded plantings. Spinach can also be started as transplants for the Fall, which means the seeds can be germinated in a cool, controlled environment, and then planted out as transplants.
Spinach can be grown and harvested in both a baby leaf form and a large leaf form. To grow baby spinach, direct seed at a rate of about 4 seeds per inch and do not thin the plants after they’ve germinated. Harvest the baby spinach as cut-and-come-again greens. If you’re planning to harvest large leaf spinach for cooking greens, transplant and/or thin the plants down to 1 plant per 4 inches.
For successful overwintering, it is important that you thin your spinach to decrease competition between plants and increase air circulation. Once your spinach has developed 3 sets of leaves, thin seedlings to 4-6” apart. Spinach can withstand hard frosts, so temperatures as low as 25ºF. Wait for frost to pass before harvesting. Spinach will continue to grow into the early spring.
Like what you hear? Please share our podcast with a friend. Subscribe on iTunes or your favorite podcast player so you never miss a beat. And we'd really appreciate you showing us some love by leaving a rating and review on iTunes.
We need your support to keep make fresh, quality weekly content! Support us here: