How to Grow Berberis Thunbergii Maria - Plant Care & Tips

By NorwichGardener Team   /   2025

Berberis thunbergii maria is a beautiful and interesting plant that is native to Japan. It has a long history of use in traditional Japanese medicine, and more recently, it has been gaining popularity as a ornamental plant in Western countries. The berberis thunbergii maria plant is an evergreen shrub that can grow up to six feet tall. It has small, oval-shaped leaves that are dark green in color and have a glossy texture. The plant produces clusters of small, yellow flowers in the springtime. The berberis thunbergii maria plant is an easy-to-care-for shrub that is perfect for gardens of all sizes.

How to Grow Berberis Thunbergii Maria - Plant Care & Tips

Alternative name

  • Barberry
  • Mountain Mahonia
  • Oregon grape
  • Tall Oregon grape
  • Mahonia

Common Knowledge

  • Berberis thunbergii 'Maria' is a hybrid barberry.
  • It is a cross between Berberis thunbergii and Berberis eastwoodiae.
  • It was created by Dr. Ernst Wehmeyer in 1930.
  • 'Maria' is named after Maria Wehmeyer, the daughter of Dr. Wehmeyer.
  • The plant is an evergreen shrub.
  • It can grow to be 6-8 feet tall and 8-10 feet wide.
  • The leaves are ovate-shaped and dark green.
  • The flowers are yellow and appear in clusters.
  • The fruit is red and spherical.
  • Berberis thunbergii 'Maria' is adaptable to a variety of soil types and prefers full sun to partial shade.

How to Grow

  1. For berberis thunbergii maria, first step is to find a location that has full sun and well-drained soil.
  2. Once you have found the perfect spot, clear the area of any debris or weeds.
  3. Next, dig a hole that is twice the width and depth of the grower’s pot.
  4. Amend the soil with compost or organic matter if needed.
  5. Gently remove the plant from its pot and place it in the hole.
  6. Fill in around the plant with soil, tamping down as you go.
  7. Water the plant deeply.
  8. Mulch around the plant to help retain moisture.
  9. Fertilize the plant every few weeks during the growing season.
  10. Prune as needed to shape the plant and promote new growth.

Related plant:
Berberis Thunbergii Orange Sunrise

The Soil

About soil condition, berberis thunbergii maria can grow in various soil conditions, but it prefer well-drained soils. It is adaptable to both dry and moist soils, but it will not tolerate wet or soggy soils. It can also tolerate a wide range of pH levels, from 4.5 to 8.0.

About light

Similar to other Berberis Maria sun requirements are 6 hours daily. They can handle some afternoon sun but morning sun is best. They are heat, drought, and cold tolerant once established. I have seen these plants kept in near full sun with no protection in mid-summer and they were just fine. They are also fine if left in full sun in winter with no protection.

Ideal Temperature

The temperature condition that is most ideal for Berberis thunbergii 'Maria' is full sun to partial sun. The plant does best in well-drained, fertile soil that is kept moist but not wet. 'Maria' is a relatively drought-tolerant plant once it is established. It can tolerate temperatures as low as -20 degrees Fahrenheit.

Humidity Requirement

Ideal humidity condition for this plant is between 40 to 60%. If the air is too dry, the leaves will start to turn brown and drop off. If the air is too moist, the leaves will start to yellow and drop off. The plant does not like sudden changes in humidity, so it is best to keep the humidity level consistent.

The Fertilizer

About fertilizer, this plant is not too demanding. A little compost or other organic matter added to the planting hole is adequate. However, phosphorus should be avoided because it can stimulate root and stem growth to the detriment of flowering. If you have concerns about the soil nutrient content, have a soil test done before planting. Berberis thunbergii 'Maria' is an outstanding cultivar that is noted for its tight, compact habit, lustrous deep green foliage and purple flowers. It typically matures to only 2-3’ tall and as wide. It is an excellent choice for use as a low hedge or foundation plant.

Plant Pruning

Pruning your Berberis thunbergii 'Maria' is important to maintain its shape and size. You can prune it in late winter or early spring, before new growth begins. When pruning, cut back any dead or diseased branches, as well as any branches that are rubbing against each other. You can also prune to thin out the plant and encourage new growth.

The Propagation

Propagation is most successful with softwood or semi-ripe cuttings taken in late spring or early summer and placed in a cold frame or propagator. The cuttings should be around 10cm (4 in) long and have 2-3 leaves. Remove the lower leaves and insert the cutting around 2.5cm (1 in) deep into a well-drained, sandy soil. Keep the soil moist and after a few weeks, the cuttings should have rooted.

Growth Speed

Usually, the plant growth rate during the growing season is slow to moderate. However, during the late summer and early fall the growth rate can be quite fast. If you are looking for a plant with a moderate growth rate, this is a good choice.

Basic Problems

Common problems for this kind of plant are foliar spots, rusts, and root rots. These problems are often seen in areas with high humidity and warm temperatures. To prevent these problems, it is important to keep the plant in an area with good air circulation and to avoid over-watering.

Growing Tips

  • Make sure to plant berberis thunbergii maria in an area that receives full sun to partial shade.
  • This plant prefers well-drained soil.
  • Berberis thunbergii maria is a moderate to fast grower, so keep that in mind when planning your garden.
  • To encourage bushy growth, prune back the tips of the stems in early spring.
  • This plant can be susceptible to aphids, so keep an eye out for them and treat accordingly.
  • Berberis thunbergii maria is generally disease-resistant.
  • Deer tend to avoid this plant, so it can be a good choice for gardens in areas where deer are a problem.
  • Be sure to water regularly, especially during periods of extended dry weather.
  • Fertilize berberis thunbergii maria in early spring and mid-sum

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Source:
Japanese barberry : Berberis thunbergii - Berberidaceae …
Berberis thunbergii - UF/IFAS Assessment - University of Florida ...
Berberis thunbergii | Landscape Plant Propagation Information

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Reviewed & Published by Richelle
Submitted by our contributor
Shrubs Category