1/10

Hemlock

About Hemlock

Conium maculatum is an erect biennial with a fleshy taproot and showy white flowers. The leaves of Conium Maculatum resemble parlsey's leaves (Petroselinum crispum). The leaves are extremely poisonous.

Taxonomy

Scientific name

Conium maculatum

Genus

Conium

Family

Apiaceae

Order

Apiales

Also known as

Poison hemlock

How to care for Hemlock

💦 Water

How often to water your Hemlock

Hemlock needs 0.5 cups of water every 9 when it doesn’t get direct sunlight and is potted in a 5" pot.

Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Water 0.5 cups every
9

Does your plant get direct sunlight?

No Yes

Select the pot size

☀️ Light

Finding light for Hemlock in your home

Hemlock may have difficulty thriving, and will drop leaves 🍃, without ample sunlight.

Place it less than 3 feet from a south-facing window to maximize the potential for growth.

Select your region to see how the current weather in your area affects the placement of Hemlock in your home 🏡.

🪴 Nutrients

How to fertilize Hemlock

Nutrient, fertilizer, and repotting needs for Hemlock: repot after 2X growth

Most potting soils come with ample nutrients which plants use to produce new growth.

By the time your plant has depleted the nutrients in its soil it’s likely grown enough to need a larger pot anyway.

To replenish this plant's nutrients, repot your Hemlock after it doubles in size or once a year—whichever comes first.

What is this fern? Just picked her up from Trader Joe's and Greg says it's a Wild Carrot. I'm not sure if it's that, or even a hemlock. Do you guys have any ideas? #plantidentify

Browse #Hemlock

💡 FAQs

💦 Water Needs

Hemlock prefers for the soil to dry out between waterings and should be watered regularly. Use our water calculator to personalize watering recommendations to your environment or download Greg for more advanced recommendations for all of your plants.

Hemlock Water Frequency →

Hemlock Root Rot →

☀️ Sunlight Needs

Hemlock may have difficulty thriving and will drop leaves 🍃 without ample sunlight. Place it less than 3 feet from a window to maximize the potential for growth. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Hemlock Light Requirements →

Hemlock Direct Sunlight Needs & Tolerance →

🐶 🐈 👶 Toxicity

Hemlock is extremely dangerous if consumed. If you, a family member, or a pet has ingested any amount of plant material contact Poison Control, US (800) 222-1222, or your veterinarian immediately. Hemlock is not recommended for homes with children, cats, or dogs.

⬆️ ⬇️ Growth Pattern

Hemlock grows vertically and new growth will emerge from the top of the plant.

Hemlock Lifecycle →

Hemlock Size Guide →

How and When to Prune Hemlock →

🌦️ Growing Outdoors

USDA Hardiness Zone
Hemlock can be grown outdoors in USDA Hardiness Zones 4a-8b. Find your local hardiness zone here.

Hemlock Temperature Tolerance →

Hemlock Hardiness Zones →

Is Hemlock a Weed? →

🍂 Yellow Leaves

Yellow leaves aren’t always a reason to panic, and can be a normal part of a plant’s life cycle. Unless brand new leaves are turning yellow or all the leaves change color at once, it’s likely just your plant shedding old leaves.

Overwatering and root rot are the most likely cause of problems in Hemlock, since they are sensitive to wet soil. The leaves may also appear to be curling or drooping. Less often, yellow leaves are caused by underwatering, nutrient deficiencies, or pests.

Replace soggy soil with fresh, dry soil and download Greg to make sure your plant never gets overwatered again!

🧐 Troubleshooting

When troubleshooting a sad-looking houseplant, start by checking for signs of distress in its leaves, such as yellowing, browning, or drooping, which can indicate overwatering or nutrient deficiencies.

Inspect the soil moisture; too dry or too wet soil can cause problems.

Ensure the plant is getting the right amount of light, as too much or too little can stress it.

Finally, consider environmental factors like temperature and humidity, and adjust care routines accordingly to revive your plant.