When to Plant Green Asparagus?

When to plant green asparagus?

If you love gardening and a delicious plate of fresh asparagus, you've come to the right place. Green asparagus is a bit less work than the white variety, and luckily, you don't have to bury it as deeply. But it's important to choose the right timing and approach, otherwise your asparagus dream will fizzle out. So: when and how is the best time to plant green asparagus? We'll guide you through it in a way that even the novice gardener can understand.

What makes green asparagus special?

Unlike their white counterparts, green asparagus grows above ground. This means they receive sunlight, which is how they develop their greenish color. They often have a slightly stronger flavor and are packed with vitamins. They're less labor-intensive, as you don't have to dig trenches several meters deep or cover them with plastic. A win-win situation for those just starting out in a vegetable garden.

When to plant green asparagus in open ground?

The best time to plant green asparagus in the open ground is in early spring—preferably between late March and mid-April. It's best to wait until the soil has warmed to at least 10°C. Ideally, choose a dry but cloudy day for planting, or even a light rainy day. This ensures the soil is moist and warm enough for the plants to establish. Note: it's important to plant in well-drained soil. Adding perlite to your soil can help if you have a wet garden.

How do you plant green asparagus in the open ground?

Dig furrows about 15 cm deep and 30 cm wide. Leave about 80 cm between each furrow, as asparagus likes to grow freely. Place the root balls (also called "claws") on small soil ridges with the growth buds facing upward. Allow about 30 cm between each plant. Gently cover the claws with 5 cm of soil. After a few weeks, as the plants begin to grow, fill the furrow until it is completely full. Water immediately after planting, but make sure the soil doesn't become soggy.

And in the greenhouse?

In a greenhouse, you can get started a bit earlier. As early as late February or early March, you can plant your asparagus spears in the ground. The average temperature there is a few degrees higher than outside, which promotes growth. Here too, water well without puddles and ensure there's sufficient space between the plants. Want to avoid strong sunlight? Provide some shade to prevent it from getting too hot on sunny spring days. In a greenhouse, you often have more control over pests like snails. A welcome bonus!

What comes after planting?

Patience is truly a virtue with green asparagus. You won't harvest any stems for the first two years. Give your plants time to develop a strong root system during this time. From the third year onwards, you can harvest them for a month, then gradually expand. After harvesting, always allow some shoots to grow until a fern-like plant develops. This fern-like plant gathers energy through photosynthesis for the next season. Taking cuttings isn't common practice with asparagus, but do ensure ventilation and keep it weed-free if you're working in a greenhouse.

Which soil is ideal?

Green asparagus thrives in loose, airy, and chalky soil. Heavy clay soil isn't a good choice unless you amend it with organic matter. Pumice or coconut fiber are highly recommended for improving your soil structure. Avoid areas where rainwater drains poorly, especially in open ground. Asparagus is a persistent plant, staying in one spot for up to 10 years. So consider your location carefully.

Combine or separate?

Because asparagus likes to develop deep roots and requires space, it's best to plant it alone. So, no neighbors like carrots or Jerusalem artichokes. Fortunately, they're quite easy to care for. A little mulch or peat moss helps maintain even soil moisture. And at the start of the season, add an organic fertilizer, such as compost or well-rotted manure.

What grows well in the garden?

Do you still have room in your garden or conservatory after planting your asparagus? Then easy houseplants like the ZZ plant or Yucca can be good candidates for the orangery or conservatory. They require little care and, like asparagus, enjoy light and air. If you're looking for something tropical for indoors, the Ficus Lyrata could also be your green companion.

Planting green asparagus: a summary

• When planting in open ground: End of March to mid-April. Wait for the soil to reach 10°C.
• When greenhouse: It is possible from the end of February.
• Weather conditions: Dry or slightly rainy days are ideal for planting.
• Spacing between plants: At least 30 cm between each plant, 80 cm between rows.
• Patience required: First harvest after 2 years, full-fledged after 3 years.

Ready to get into the garden? Want to learn more about other vegetables? Perhaps you'd also be interested in our article on when to plant potatoes orwhen to plant beans ?

With the right preparation and a little love, you can enjoy fresh, crisp green asparagus from your own garden for years to come. And honestly, does anything taste better when you plant it yourself?