If you’re looking for a unique and flavorful herb to grow, you should consider shiso. This fresh and aromatic herb is a staple in many Asian kitchens, but it deserves a spot in any garden.
Shiso, also known as perilla, is incredibly versatile. It’s leaves come in green and purple varieties, each with a distinct taste. The flavor is often described as a mix of mint, basil, and anise with a hint of cinnamon. It’s a real conversation starter for your herb bed.
Shiso – Fresh and Aromatic Herb
Getting to know this plant is the first step. Shiso is a member of the mint family, and it shows in its vigorous growth. It’s an annual plant, meaning it completes it’s life cycle in one season. But it often self-seeds readily, so you might find new plants popping up next year.
Why Grow Shiso in Your Garden?
There are many reasons to make space for shiso. It’s not just about the unique taste.
- Visual Appeal: The purple-leafed varieties add stunning dark burgundy color to garden beds. The leaves are ruffled and beautiful.
- Pollinator Friendly: When it flowers, shiso attracts bees and other beneficial insects to your garden.
- Culinary Adventure: It opens up a world of new recipes, from simple garnishes to pickled dishes.
- Easy to Grow: Once established, shiso is relatively low-maintenance and grows quickly.
Choosing Your Shiso Variety
You’ll mainly find two types for culinary use. The green variety is called ‘Aojiso’ in Japanese. It’s the one most commonly used for fresh eating and sushi. The purple variety is ‘Akajiso’. It’s often used for pickling, where it imparts a beautiful pink color to umeboshi plums.
There’s also a third, less common type with curly leaves. Think about what you want to use it for before you choose your seeds or seedlings.
How to Plant and Grow Shiso Successfully
Growing shiso from seed is the most common method, but it can be tricky for beginners. The seeds have a hard coat and need special treatment.
Starting from Seed
- Stratify Seeds: Place seeds in a damp paper towel in a plastic bag. Refrigerate for about a week to mimic winter.
- Sow Carefully: Sprinkle seeds on top of moist seed-starting mix. They need light to germinate, so don’t cover them with soil.
- Keep Warm and Moist: Use a spray bottle to mist the soil. Keep the tray warm (around 70°F) and be patient. Germination can take 2-3 weeks.
- Thin Seedlings: Once they have a few sets of true leaves, thin them or transplant to individual pots.
Planting in the Garden
Wait until all danger of frost has passed. Shiso loves warm weather. Choose a spot with well-draining soil. It can handle full sun to part shade. If you give it to much shade, the stems might get leggy.
- Space plants about 10-12 inches apart.
- Amend the soil with some compost before planting for best results.
- Water the seedlings in well after transplanting.
Caring for Your Shiso Plants
Shiso isn’t a diva. It’s pretty resilient once it gets going. Water regularly, especially during dry spells, but avoid waterlogged soil. A layer of mulch can help retain moisture. You don’t need to fertilize heavily. A little balanced organic fertilizer at planting time is usually enough.
The main task is pinching. To encourage a bushier plant with more leaves, pinch off the top set of leaves when the plant is about 6-8 inches tall. This prevents it from flowering to early. Once it flowers, leaf production slows down.
Harvesting Your Shiso Leaves
You can start harvesting leaves once the plant is well-established and has several sets. Always harvest from the top, just above a set of leaves. This encourages new growth from the sides. Pick leaves in the morning after the dew has dried for the best flavor.
Don’t be shy about harvesting regularly. The more you pick, the more the plant will produce. Just be sure to leave enough leaves so the plant can continue to photosynthesize effectively.
Dealing with Pests and Problems
Shiso is fairly pest-resistant due to its strong aroma. However, you might occasionally see issues.
- Slugs and Snails: These are the most common pests, especially for young plants. Use beer traps or diatomaceous earth.
- Powdery Mildew: Can occur in humid conditions with poor air circulation. Space plants properly and water at the base, not on the leaves.
- Bolting: This is when the plant flowers and goes to seed prematurely, often due to stress. Keep plants consistently watered and pinch tips to delay bolting.
How to Use Shiso in Your Kitchen
This is the fun part. Shiso’s flavor is bold, so a little goes a long way. Start by using it as a garnish. Tear a leaf and add it to salads, soups, or noodle dishes. It pairs wonderfully with fish, tofu, and rice.
Here are some classic uses:
- With Sushi and Sashimi: Place a whole leaf under your fish or roll it inside.
- In Salads: Chop it and mix with other soft herbs like cilantro and mint.
- As a Wrap: Use large leaves to wrap grilled meats, rice, or vegetables.
- Pickling: Use purple shiso leaves to pickle ginger, plums, or even cucumbers.
- Infusions: Steep leaves in vinegar, simple syrup, or even vodka for a unique twist.
Preserving Your Shiso Harvest
You can enjoy shiso beyond the growing season. The leaves don’t dry well, but there are other methods.
- Freezing: Wash and pat leaves dry. Place them in a single layer on a tray to freeze, then transfer to a bag. They will be limp when thawed but fine for cooked dishes.
- Making Shiso Paste: Blend leaves with oil and a pinch of salt. Freeze in ice cube trays for easy use in sauces.
- Pickling: This is a fantastic way to preserve the unique color and flavor of purple shiso.
FAQ About Shiso
What does shiso taste like?
It’s a complex blend of mint, basil, anise, and sometimes citrus or cinnamon, depending on the variety. It’s very aromatic.
Can I grow shiso indoors?
Yes, you can grow it in a pot on a sunny windowsill. Just ensure it gets at least 6 hours of light and you rotate the pot regularly.
Is shiso the same as perilla?
Yes, shiso and perilla are common names for the same plant, Perilla frutescens. Different cultures use different names.
Where can I buy shiso seeds or plants?
Check Asian grocery stores, specialty nurseries, or online seed catalogs. They are becoming more widely available.
My shiso seeds aren’t sprouting. What’s wrong?
Remember, they need light and a period of cold stratification. Don’t bury the seeds, and try the refrigerator trick first. Also, seed viability can be short, so use fresh seeds if possible.
How do I stop my shiso from taking over the garden?
To prevent self-seeding, cut off the flower spikes before they go to seed. If you want volunteers, let a few flowers mature and drop there seeds.
Adding shiso to your garden is a simple way to try something new. Its beautiful foliage, easy care, and standout flavor make it a rewarding choice. With these tips, you’ll be able to grow, harvest, and enjoy this special herb all season long. Give it a try this year and see what creative dishes you can make.