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Blue Tansy

About Blue Tansy

Scorpian weed is an annual widely used in Europe and is gaining traction in the US. It propagates easily from seed and is attractive to pollinators. It is drought tolerant, prefers full sun and withstands sandy or rocky soil. It's winter hardy to 18 degrees F.

Taxonomy

Scientific name

Phacelia congesta

Genus

Phacelia

Family

Hydrophyllaceae

Order

Boraginales

Also known as

Lacy Phacelia, Lacy Phacelia, Blue tansy and Purple tansy

How to care for Blue Tansy

💦 Water

How often to water your Blue Tansy

Blue Tansy 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 Lacy Phacelia in your home

Blue Tansy love being close to bright, sunny windows 😎.

Place it less than 1ft from a south-facing window to maximize the potential for growth.

Blue Tansy does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Blue Tansy

Nutrient, fertilizer, and repotting needs for Blue Tansy: 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 Blue Tansy after it doubles in size or once a year—whichever comes first.

💡 FAQs

⭐ Difficulty Level

Blue Tansy is generally easy to care for, though some plant parents report facing challenges with growing it. Check out the reviews down below to read more about their experiences!

How to Grow Lacy Phacelia →

Benefits of Growing Lacy Phacelia →

Common Lacy Phacelia Problems →

Outdoor Care Guide for Lacy Phacelia →

💦 Water Needs

Blue Tansy 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.

Lacy Phacelia Water Frequency →

Lacy Phacelia Root Rot →

☀️ Sunlight Needs

Blue Tansy requires abundant, bright and direct light. Place it less than one foot from a window to ensure it receives enough light to survive 💪. Select your region to see how the current weather in your area affects the placement in your home 🏡.

Lacy Phacelia Light Requirements →

Lacy Phacelia Direct Sunlight Needs & Tolerance →

🐶 🐈 👶 Toxicity

Blue Tansy is not known to cause harm to humans or pets. Regardless, if you, a family member, a cat, or dog has ingested any plant material, please consult a doctor or a veterinarian.

🪴 Soil

Blue Tansy does best in well-draining soil. A good soil will contain lots of organic matter such as coco coir as well as perlite or vermiculite to help with drainage. Adding a handful of perlite to regular store-bought potting soil should do the trick!

Best Soil Mix for Lacy Phacelia →

Best Pots for Lacy Phacelia →

When and How to Successfully Repot Lacy Phacelia →

What Are Healthy Lacy Phacelia Roots →

💩 Fertilizer

Blue Tansy is a fast growing plant and may deplete the nutrients in its soil over time. Replenish them with a gentle organic fertilizer or compost every 1-2 months depending on your location and season. Fertilize more often during the growing season and in warmer and brighter climates.

How Much and When to Fertilize Lacy Phacelia →

⬆️ ⬇️ Growth Pattern

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

Lacy Phacelia Lifecycle →

Lacy Phacelia Size Guide →

How and When to Prune Lacy Phacelia →

🌦️ Growing Outdoors

USDA Hardiness Zone
Blue Tansy can be grown outdoors in USDA Hardiness Zones 6a-10b. Find your local hardiness zone here.

Lacy Phacelia Temperature Tolerance →

Lacy Phacelia Hardiness Zones →

Landscaping Ideas with Lacy Phacelia →

When to Plant Lacy Phacelia →

How to Plant Lacy Phacelia →

Where to Plant Lacy Phacelia →

Winter Care for Lacy Phacelia →

Best Companion Plants for Lacy Phacelia →

Is Lacy Phacelia a Weed? →

🌱 Propagation

The seeds of Blue Tansy can be used to grow new plants! After your plant flowers, any seeds that formed can be collected and germinated in potting soil.

How to Propagate Lacy Phacelia →

🍂 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 Blue Tansy, 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.