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Blue Mountain Lilac

Also known as

blue blossom ceanothus, blueblossom, blueblossum and bluebrush

Taxonomy

Scientific name

Ceanothus thyrsiflorus

Genus

Ceanothus

Family

Rhamnaceae

Order

Rosales

How to care for Blue Mountain Lilac

💦 Water

How often to water your Blue Mountain Lilac

Blue Mountain Lilac 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 Blue Mountain Lilac in your home

Blue Mountain Lilac love being close to bright, sunny windows 😎.

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

Blue Mountain Lilac does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Blue Mountain Lilac

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

💡 FAQs

⭐ Difficulty Level

Blue Mountain Lilac is generally considered an easy-to-care-for plant and makes a great choice for beginners!

How to Grow Blue Mountain Lilac →

Benefits of Growing Blue Mountain Lilac →

Common Blue Mountain Lilac Problems →

Outdoor Care Guide for Blue Mountain Lilac →

💦 Water Needs

Blue Mountain Lilac 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.

Blue Mountain Lilac Water Frequency →

Blue Mountain Lilac Root Rot →

☀️ Sunlight Needs

Blue Mountain Lilac 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 🏡.

Blue Mountain Lilac Light Requirements →

Blue Mountain Lilac Direct Sunlight Needs & Tolerance →

🐶 🐈 👶 Toxicity

Blue Mountain Lilac 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.

Is Blue Mountain Lilac Edible? →

Blue Mountain Lilac Toxicity to Cats →

Blue Mountain Lilac Toxicity to Dogs →

Blue Mountain Lilac Toxicity to Humans →

🪴 Soil

Blue Mountain Lilac 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 Blue Mountain Lilac →

Best Pots for Blue Mountain Lilac →

When and How to Successfully Repot Blue Mountain Lilac →

What Are Healthy Blue Mountain Lilac Roots →

💩 Fertilizer

Blue Mountain Lilac should be repotted after it doubles in size or once a year, whichever comes first. Fresh potting soil has all the nutrients your plant needs, so as long as it’s refreshed yearly, you shouldn’t need to use fertilizer. Remember, plants get their energy from sunlight, not fertilizer!

How Much and When to Fertilize Blue Mountain Lilac →

⬆️ ⬇️ Growth Pattern

Blue Mountain Lilac will branch off as it grows. To encourage branching, pinch off the newest growth at the tip and the stem will branch off into two.

Blue Mountain Lilac Lifecycle →

Blue Mountain Lilac Size Guide →

How and When to Prune Blue Mountain Lilac →

🌦️ Growing Outdoors

USDA Hardiness Zone
Blue Mountain Lilac can be grown outdoors in USDA Hardiness Zones 8a-10b. Find your local hardiness zone here.

Blue Mountain Lilac Temperature Tolerance →

Blue Mountain Lilac Hardiness Zones →

Landscaping Ideas with Blue Mountain Lilac →

When to Plant Blue Mountain Lilac →

How to Plant Blue Mountain Lilac →

Where to Plant Blue Mountain Lilac →

Winter Care for Blue Mountain Lilac →

Best Companion Plants for Blue Mountain Lilac →

Is Blue Mountain Lilac 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 Blue Mountain Lilac, 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.