Vietnamese coriander is a perennial herb that is commonly used to enhance the taste of food. You can either eat the Vietnamese coriander fresh by serving it with salads or use it as cooking spices.
The leaves and stems of this herb widely appear in Southeast Asia dishes. It’s specifically a typical feature of Vietnamese cuisine. And that’s why its name is associated with this beautiful S-shaped country.
Vietnamese coriander thrives best in the tropics and subtropics where the climate is warm and damp. Still, it’s possible to grow it even when you are living in a place that has breezing winters.
Just stick with my thorough guide below, and you will have these lovely trees in your garden.
Now I will show you everything you need to know to grow Vietnamese coriander.
- Methods of Growing Vietnamese Coriander
- When to Plant Vietnamese Coriander
- Planting Vietnamese Coriander
- Harvest Your Vietnamese Coriander
- Common Diseases When Growing Vietnamese Coriander
- Final Thoughts
Methods of Growing Vietnamese Coriander
Vietnamese coriander is one of the most straightforward plants to grow. Therefore, there are many possible ways to plant it. And here are four common ways to raise Vietnamese coriander. Choose one that fits you best.
Way #1: Grow with an entire tree
This is the simplest way of growing. All you have to do is to visit a store and buy a pot of Vietnamese coriander. Directly put the pot in your garden. Or you can take out the tree and plant it as you want.
Way #2: Grow with seeds
If you are a more devoted gardener, you may want to buy the seeds and enjoy raising the Vietnamese coriander yourself. Of course, things are harder and need more care.
So, what if you buy a bunch of Vietnamese coriander with no roots in a supermarket or grocery store?
Way #3: Grow by stems in water
Well, since Vietnamese coriander is easy to grow, you can even plant out a full tree just from the stems. Awesome!
After using the leaves for cooking, save the stems and a few young leaves on the top. Put them in a glass of water and wait for the roots to come out. Then, take it outside and plant in your garden.
Way #4: Grow by stems in the soil
The more exciting thing is that you can directly plant the Vietnamese coriander in the ground without any roots. And then it will naturally grow some roots. But remember to put it in a shaded place for the first time. The sun is likely to damage the herb having no roots.
Please note that in this article, I will only instruct you how to grow from seeds because it’s the most challenging method. So, you may need more guidance on it.
When to Plant Vietnamese Coriander
Vietnamese coriander is a hydrophilic plant that can live in almost all climates. All it needs to survive is enough warmth and water.
The best time for growing are spring and summer when the weather is warm and sunny. Remember to avoid leaving it outside in winter because this herb cannot survive under 7℃.
When winter comes, move the plant indoors (placing it in your kitchen is an ideal choice). Although its growth will slow down or delay, the plant is still alive through the harsh winter after all.
Planting Vietnamese Coriander
Now let’s start gardening. The first thing you need is the perfect preparation.
Preparing the soil
For the best result, choose the new soil that hasn’t been used before for low possibilities of diseases. To fasten germination, mix the soil with multi-purpose compost that is water-retentive and also drains well. Or you can combine the perlite with organic fertilizer, for example, one that based on Walden Bracken.
And if you are planning to raise this herb in your garden, the best choice is to keep it in a pot, a container, or a hanging basket. I advise you not to let it grow too freely because the last time I did that, the coriander spread all over the places and ruined other plants.
Sowing the Seeds
You can directly plant them into moist soil. Arrange the seeds suitably to ensure enough space and nutrition for them. I suggest placing them 10 centimeters apart from each other.
A better alternative is to incubate the seeds before sowing. This addition helps shorten the time needed for germination and eliminate the faulty seeds.
To incubate, soak the seeds in warm water for about 3 to 6 hours. After that, rinse the seeds and cover them with a cloth for about a night. Now the seeds are ready for sowing
Use clean water for the best outcome. I recommend using a spraying system or a water nozzle to distribute water evenly. You should water twice a day to keep the soil always moist. And the herbs will need more frequent watering in the dry summer.
Please note that the surface of the soil must be dry before watering it again. Vietnamese coriander is happy with lots of water, but anything too much is not always good.
An excellent fertilizer to promote Vietnamese coriander growth is liquid seaweed fertilizer. After watering your herbs, put a thin layer of the liquid on the surrounding soil.
Apply it to your herbs a maximum of twice a month in warm weather. And when it’s cooler, fertilizing once a month is enough. DON’T feed them more than twice a month. If you overfertilize it, the taste of the herbs will reduce.
Time for a bonus! Here are some useful tips when raising Vietnamese coriander.
Since the most crucial part that we need from Vietnamese coriander is its leaves, pinch out the tips of the plant frequently to encourage leaf growth. Cutting back it helps focus nutrients for the leaves instead of growing longer.
Whenever you see its stems reach outside the allowed space, trim them off. In this way, your herbs will be bushier and stronger. And the older stems won’t become woody as well.
Also, if there are tiny white flowers appear on the top of your plant, eliminate them immediately. These flowers are lovely, indeed, but they will steal all the nutrients.
Allow them to grow, and your herb will die eventually, no matter how much you feed it. And the worse thing is that these beautiful flowers don’t give out any seeds, sorry but you’ll have nothing left after that.
Harvest Your Vietnamese Coriander
About a month after planting, the herbs will fully grow. So, you should harvest your herbs in the late spring or summer. Only harvest when they are dry. The best time is at dusk, between the two watering plans of the day.
And because Vietnamese coriander is perennial, it will continue to grow again after you harvest it. Therefore, a single tree can last for several times of harvest.
Ways of Harvest
Use your gardening shears to cut off the sprigs. You should have the cut close to the root, only leave about 3 to 5 centimeters above the surface. Remember to water and fertilize the plant after harvesting to recover growth.
You can choose between these two common ways to harvest your Vietnamese corianders:
- Prune the longer sprigs
- Cut by clumps in turns
But if you plant in a small amount for home use only, you can pick the fresh leaves whenever you need. And don’t worry if the leaves get dry, the flavor still maintains.
Common Diseases When Growing Vietnamese Coriander
An essential thing to concern when planting Vietnamese coriander is possible diseases as well as pests. Also, it’s necessary to learn how to cope with them. Below is the basic information about the most common diseases that affect Vietnamese coriander’s growth.
Types of Diseases
Now I will introduce the two most significant problems when planting Vietnamese coriander.
Root Rot Disease
This disease is one of the most common issues with raising Vietnamese coriander. It usually occurs after harvesting your herbs.
As I mentioned before, Vietnamese coriander has an incredible growing ability. When you cut off its sprigs, it can easily thrive again. But, only if the root is healthy.
If your plant encounters this disease, the root will become rotten and die. As a result, it will never grow again. No more to harvest!
Harmful insects are always nightmares to farmers. Also, your garden is not an exception. The two most popular insects that attack Vietnamese coriander are aphids and spider wites.
Aphids can change the shape of the leaves when growing. Other symptoms are curling, stunted, or yellow leaves. Meanwhile, spider wites turn the leaves into yellow or red, which will eventually fall off.
So, what allows these diseases and pests to harm your herb?
Root rot disease is the result of long-term exposure to the sun. When you cut off the leaves and stems for harvesting, there’s nothing left to protect the root from the sun. Now, the heat of the sun can damage the root and lead to root rot disease.
On the other hand, Vietnamese coriander lives under damp conditions, which is favorable for insects’ development. Things will get worse if you plant the herb in a narrow area.
To avoid these severe diseases, try the below actions:
- Clean the soil before planting to remove any germs available
- Put down primary fertilizer to reduce the risk of diseases
- After harvesting, place the root in a shaded area until it grows enough leaves, or build a shelter for it
- Choose a planting zone that is wide and open air
So, what if the plant has already shown the symptoms of the diseases? How to solve the problems? Well, here’s how.
First of all, remove the dead plants. Then, conduct a thorough cleaning in the surrounding area, especially the soil, to avoid the diseases from spreading to other plants. Now, take the prevention actions that I instructed above.
And if you witness any sign of active pests, spray over your garden with non-toxic insect repellent. When you see no symptoms on the leaves anymore, the work is done.
Vietnamese coriander is an impressively easy-to-grow herb. By following my complete instructions, you will no longer need to head for the grocery stores to have this herb’s unique flavor for your dishes. Whenever you want this herb for cooking, simply get to your green garden and grab some.
I hope that you will receive the best results with growing Vietnamese coriander. Please leave a comment to share your outcome with me. And don’t forget to like and share for more fantastic gardening guides.