Dieffenbachia ‘Cougar’

(3 customer reviews)
Ships in 1-2 Business Days
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Ships July 19th - July 26th.

Select Pot

  • Grower
    Ships in our standard grower pot which includes drainage holes at the bottom.
  • Selva

    12 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Includes plug and saucer.

  • Viento

    12 inches wide. Made with recycled plastic and natural materials. Weather resistant, insulating, frost resistant, chip and crack resistant. Does not include a drainage hole.

$ 71.00
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Natural Root Stimulant

Natural probiotics, organics, and moisture control gel boost root growth. Invigorates existing plants, reduces transplant shock and accelerates establishment of new plants. This all natural product will not burn roots.

When Transplanting: Apply between new soil and plant so stimulant touches root ball.

For Existing Plants: Apply stimulant 2-3 inches below top of soil.

Use the proper amount for each pot size:
6″ Pot: ½ Pack
8-10″ Pot: 1 Pack
12-14″ pot: 2 Packs

Organic Indoor Soil Mix

Watch your indoor plants flourish with PlantVine’s Organic Indoor Soil. This is our best all-purpose mix for the demanding requirements of indoor potted plants. The perfect combination of quality ingredients provides the ideal amount of water retention, drainage and aeration for a wide variety of interior plants. This is an all natural product containing no artificial fertilizers or chemicals. Each bag contains 128 oz of soil.

6” pot into an 8-10” planter: About 1.5 bags
8-10” pot into a 12-14” planter: About 3 bags

Soluble Fertilizer

Great for indoor and outdoor potted plants, this fertilizer quickly dissolves in water, making fertilizing as quick and simple as possible. Just mix 1 teaspoon (scoop included) with 1 gallon of water, and water as normal. Makes 48 gallons.

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Scientific Name: Dieffenbachia ‘Cougar’

Common Name: Cougar Dumb Cane

Overview: Dieffenbachia ‘Cougar’ is a captivating houseplant, renowned for its unique and vibrant foliage, making it an exceptional addition to any indoor plant collection. This striking cultivar stands out with its large, elongated leaves that showcase a dazzling pattern of dark green edges and a speckled light green center, creating a dynamic and textured appearance. The leaves sprout from sturdy, upright stems, contributing to the plant’s robust and full-bodied look.

Reaching an average height of 2-3 feet, Dieffenbachia ‘Cougar’ is perfectly sized for tabletops, shelves, or as a striking floor plant. Its easy-care nature makes it suitable for both novice and experienced plant enthusiasts. Ideal for indoor environments, ‘Cougar’ thrives in medium to bright indirect light but is also adaptable to lower light conditions. It prefers a warm and humid atmosphere, typical of its tropical origins.

Recently Shipped Dieffenbachia 'Cougar'


Caring for your Dumb Cane

Dieffenbachia is a beautiful and rewarding plant to care for. Its low-maintenance nature makes it suitable for plant lovers of all levels. With the right care, your Dieffenbachia will be a vibrant, thriving addition to your indoor garden for years to come. Remember to handle the plant with care, especially when pruning or repotting, due to its toxic sap.


Dieffenbachia flourishes in medium to bright, indirect light. It can adapt to lower light conditions, but this may affect the vibrancy of its leaves. Direct sunlight should be avoided, as it can scorch the leaves, causing brown spots and fading of the variegation.


Watering is a critical aspect of Dieffenbachia care. The soil should be allowed to dry out slightly between waterings. Over-watering can lead to root rot, a common issue with this plant. Check the top inch of the soil; if it’s dry, it’s time to water. Reduce watering in the winter months when the plant’s growth slows down.

To increase humidity, especially in dry environments, you can mist the leaves, place a humidifier nearby, or use a pebble tray filled with water.


Use a well-draining potting mix. A mixture of peat, pine bark, and perlite is ideal. Repotting should be done every 2-3 years or when the plant has outgrown its pot. Spring or early summer is the best time to repot. Choose a pot that is one size larger than the current one to give the roots room to grow.


Fertilize Dieffenbachia every 4-6 weeks during the growing season (spring and summer) with a balanced, water-soluble fertilizer diluted to half the recommended strength. Avoid fertilizing in the winter when the plant is not actively growing.


Prune Dieffenbachia to maintain its shape and encourage bushier growth. Remove any yellowed or damaged leaves at the base. You can also cut back the main stem if it becomes too leggy, which will encourage new growth from the base.


Dieffenbachia can be propagated through stem cuttings. Cut a piece of stem about 4-6 inches long with at least one leaf. Let the cutting dry for a few hours to form a callous, then plant in moist soil. Keep the soil moist and in indirect light until new growth appears.

Pest and Disease Management

Common pests include spider mites, mealybugs, and aphids. These can be managed with insecticidal soap or neem oil. Diseases like root rot are usually due to overwatering. Ensure proper soil drainage and avoid letting the plant sit in water.

Dieffenbachia is toxic if ingested and can cause irritation upon skin contact. The plant should be kept away from pets and children. If skin contact occurs, wash the area thoroughly with soap and water.

3 reviews for Dieffenbachia ‘Cougar’

  1. Andrew Dennis (verified owner)

    Nice looking plant

  2. Terry D. (verified owner)

  3. Yamaris Calvo (verified owner)

    I was so excited when I saw this beautiful plant, I’m very happy with my plant thank you for this beautiful plant

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