Care Instructions for Cryptomeria japonica Globosa Nana. The Compact, Globular Japanese Cedar

Care Instructions for Cryptomeria japonica Globosa Nana

The Compact, Globular Japanese Cedar

Cryptomeria japonica 'Globosa Nana' is a stunning dwarf conifer with a naturally rounded, globular shape and dense, soft foliage. This slow-growing variety of the Japanese cedar is perfect for smaller gardens, rockeries, or as an attractive specimen plant in containers. Its deep green needles, which take on a bronze hue in winter, add texture and interest to the garden throughout the year. At Lakeside Tree Nursery, we are excited to offer this beautiful variety and are here to provide all the care tips you need to ensure your ?lobosa Nana?thrives in the UK climate.

1. Planting Location

'Globosa Nana' thrives in well-drained soil and prefers a sunny to partially shaded position. It is highly adaptable and can tolerate a range of conditions, making it suitable for many garden styles, from contemporary to traditional.

Soil: Prefers slightly acidic to neutral soil that drains well. Avoid heavy, waterlogged soils as these can cause root rot. Loamy or sandy soil with good drainage is ideal for healthy root development.

Space: This cultivar is compact and will reach a height of about 60cm to 1 metre, with a spread of 1?.2 metres at maturity. Its globe-like shape makes it perfect for planting in small spaces, mixed borders, or in containers. Space it at least 1 metre apart from other plants to give it room to develop its natural rounded form.

2. Watering

Once established, Cryptomeria 'Globosa Nana' is relatively drought-tolerant, but it will benefit from consistent moisture, particularly during dry periods.

Young Plants: Water regularly during the first year to help establish the roots. Keep the soil moist, but avoid waterlogging, as Cryptomeria plants do not like having their roots sitting in stagnant water.

Established Plants: After the first year, 'Globosa Nana' becomes more drought-tolerant. Water deeply during dry spells, typically once every 1-2 weeks, ensuring the soil is evenly moist. However, avoid allowing the soil to dry out completely, particularly during prolonged dry weather.

3. Feeding

'Globosa Nana' is not a heavy feeder, but a light feed in the spring will help encourage strong, healthy growth and vibrant foliage.

Spring Feeding: Apply a balanced, slow-release fertiliser in early spring, just before new growth begins. Organic compost or an all-purpose, slow-release feed works well for this cultivar.

Avoid Overfeeding: Too much fertiliser can lead to excessive soft growth, which is more susceptible to frost damage. Stick to a moderate, balanced feeding schedule to maintain the plant? natural compact shape and healthy foliage.

4. Pruning & Maintenance

One of the key features of Cryptomeria 'Globosa Nana' is its naturally compact, globular form, which requires very little pruning. However, a little light maintenance will help keep it looking tidy and healthy.

Light Pruning: Prune in late winter or early spring to remove any dead, damaged, or diseased branches. This will help promote better airflow and maintain the tree? shape.

Shaping: This cultivar naturally maintains a rounded form, so pruning is typically unnecessary. However, you can lightly trim any stray or overgrown branches to maintain the shape. Avoid cutting into older, woody growth, as it may not regenerate.

Deadheading: Since 'Globosa Nana' doesn? produce flowers, there is no need for deadheading. Simply remove any dead or discoloured needles to keep the plant looking fresh.

5. Winter Care

Cryptomeria 'Globosa Nana' is fully hardy in the UK, and with its dense, evergreen foliage, it is well-suited to withstand the cold months. However, some winter care can help protect young plants and keep them looking their best.

Frost Protection: While mature plants are generally frost-resistant, younger trees (under 2 years old) may need extra protection during prolonged cold spells. A layer of mulch around the base will help insulate the roots, and covering the plant with horticultural fleece can offer added protection during particularly cold weather.

Winter Colour: In winter, ?lobosa Nana?takes on a bronze or reddish tint, adding interest and beauty to your garden even in the colder months. This change in colour enhances its year-round appeal, and you can leave the foliage undisturbed to enjoy the seasonal transformation.

6. Pests & Diseases

'Globosa Nana' is generally a low-maintenance tree that is free from serious pests and diseases, but it? always good to keep an eye out for a few common issues.

Root Rot: Ensure the soil is well-draining to avoid root rot, which can occur if the plant is in waterlogged soil. If you notice yellowing foliage or stunted growth, check the drainage and adjust watering habits accordingly.

Scale Insects: Occasionally, scale insects may appear, especially on older plants. These can be gently removed with a soft brush or treated with insecticidal soap if necessary.

Needle Discolouration: Yellowing or browning needles may indicate stress, often from inconsistent watering, poor drainage, or environmental factors such as extreme temperatures. Make sure the plant receives consistent moisture and is not exposed to harsh, drying winds or excessive sun.

7. Mulching

Mulching helps to retain moisture in the soil, insulate the roots, and suppress weeds. It is especially beneficial during the winter months.

Apply Mulch: Spread a 5?cm (2? inches) layer of organic mulch around the base of the tree. Use bark chips, pine needles, or leaf mould for a natural look. Be sure to keep the mulch away from the trunk to prevent moisture buildup, which could lead to rot.

Refresh Mulch Annually: Mulch naturally decomposes over time, so it? a good idea to replenish the mulch each spring to maintain its effectiveness in suppressing weeds and retaining moisture.

8. Propagation

Cryptomeria 'Globosa Nana' can be propagated by taking semi-ripe cuttings in late summer or early autumn. These cuttings can be rooted in a well-draining compost mix. However, as with most cultivars, purchasing a young plant from a reputable nursery is often the best way to ensure you get a healthy, true-to-type specimen.

With minimal care, your Cryptomeria japonica 'Globosa Nana' will become a striking, low-maintenance feature in your garden, providing interest year-round with its compact form and vibrant foliage. Whether used as a specimen plant, in a container, or as part of a mixed planting scheme, ?lobosa Nana?offers versatility and charm for smaller spaces.

At Lakeside Tree Nursery, we are committed to helping you find the perfect plants for your garden. With its delightful form and hardy nature, Cryptomeria 'Globosa Nana' is sure to be a long-lasting addition to your landscape. With just a little care, this beautiful dwarf conifer will thrive and continue to bring beauty and structure to your outdoor space for years to come.