Blackjack

Taxonomy

Scientific name

Bidens pilosa f. pilosa

Genus

Bidens

Family

Asteraceae

Order

Asterales

How to care for Blackjack

💦 Water

How often to water your Blackjack

Blackjack 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 Blackjack in your home

Blackjack love being close to bright, sunny windows 😎.

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

Blackjack does not tolerate low-light 🚫.

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

🪴 Nutrients

How to fertilize Blackjack

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

Okay, I got Lola from my MIL and have no idea what it is but this was the plant coming up consistently when scanned. She’s in the most shaded spot in my yard and has tons of buds but they all seem to be rotting and brown. I assume over watering but am new to plants so hoping for advice.

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💡 FAQs

💦 Water Needs

Blackjack 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.

Blackjack Root Rot →

☀️ Sunlight Needs

Blackjack 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 🏡.

🐶 🐈 👶 Toxicity

Blackjack 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

Blackjack 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!

What Are Healthy Blackjack Roots →

💩 Fertilizer

Blackjack 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.

🌦️ Growing Outdoors

USDA Hardiness Zone
Blackjack can be grown outdoors in USDA Hardiness Zones 8a-11b. Find your local hardiness zone here.

Blackjack Hardiness Zones →

Is Blackjack 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 Blackjack, 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.