Nyssa sylvatica 'Forum' - Evergreen Trees Direct

Nyssa sylvatica 'Forum'

$555.00

Tax included. Shipping calculated at checkout.

Size: 40cm/45L

40cm/45L 100L

All stock is grown, maintained and graded in strict accordance with AS 4373-2007, Australian Standard for Nursery Stock.

Current Stock Height Guides

40cm/45L: 0.8m – 1.3m Approx.
100L: Enquire within for height guide information.

Height guide disclaimer: Height ranges are approximate only. As living products, plant heights naturally vary between individual plants, batches, and seasons. No guarantee is given that supplied plants will fall within the stated range. If minimum heights are required, you mustconfirm current batch heights with Evergreen Trees Direct prior to purchase. Variation in height is normal and is not grounds for return, refund, replacement, or compensation.

Mature Height & Width

Mature Height: 10m - 15m Approximately

Mature Width: 6 m – 10 m

Nyssa sylvatica 'Forum' is expected to grow Approx. 30 – 60 cm per year.

Root Ball Dimensions

Use this as a reference when digging your planting hole. We recommend digging at least 10% wider than the dimensions below to encourage strong root development.

30cm Pot: 33cm (W) × 30cm (D)
40cm/45L Pot: 44cm (W) × 41.5cm (D)
50cm Pot / 70L Pot: 55cm (W) × 41.8cm (D)
100L Bag: 50.6cm (W) × 52.8cm (D)
150L Bag: 66cm (W) × 55cm (D)
200L Bag: 71.5cm (W) × 60.5cm (D)
300L Bag: 88cm (W) × 63.8cm (D)
400L Bag: 99cm (W) × 66cm (D)
500L Bag: 122cm (W) × 66cm (D)
750L Bag: 134cm (W) × 69cm (D)
1000L Bag: 146.3cm (W) × 71.5cm (D)
2000L Bag: 176cm (W) × 82.5cm (D)

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Shipping

Shipping is calculated at checkout based on the pallet space your order occupies in the truck and your delivery location.

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Contact

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Email: sales@evergreentrees.com.au

Phone: (03) 7042 3318

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About Your New Nyssa sylvatica 'Forum'

Nyssa sylvatica 'Forum', known as the Forum Black Gum Tree, is a striking deciduous tree admired for its glossy green leaves that transform into vibrant reds, oranges, and purples each autumn. Growing 10–15 meters tall and 6–10 meters wide, it features an upright, pyramidal form that adds elegance and year-round interest to parks, gardens, and large landscapes.

This tree produces small, inconspicuous flowers in spring and tolerates a range of soils including clay and loam. It thrives in full sun to partial shade and has moderate drought tolerance, requiring regular watering during establishment and dry periods. Maintenance is low, with minimal pruning needed to maintain its shape.

Ideal for adding seasonal color and structure, the Forum Black Gum is a versatile and visually appealing choice for diverse planting schemes.

Enriched Planting Mix (AO Certified)

$21.95

Features and Benefits

Organically certified product
Improves aeration for roots
A rich blend of Pure Magic Compost, composted animal manure, Gypsum, composted coarse bark and wetting agent
Excellent to mix with heavy clay soils, an organic mixture with added gypsum which is perfect for exotic plants
Revitalises tired soils, adds nutrient and organic matter, no chemical additives, weed free
Assists in retaining moisture in the soil longer after rain or watering

Directions For Use

Water plant well at least several hours prior to planting.
Dig a hole at least twice the width of the pot and 7cm deeper than the pot.
Mix Grow Better Enriched Planting Mix with the soil that has been dug out of the hole, adding about 1/3 planting mix.
Spread a 7cm layer of improved soil in the hole and remove plant from the pot. Tease roots gently if the root ball is very firm and place plant in the planting hole. Check that pot soil is level with the surrounding soil surface level, not higher or lower.
Fill in the hole with improved soil mixture, firm down soil and water well adding Grow Better Plant Starter to final watering.

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Type:

Enriched Planting Mix (AO Certified)

$21.95

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Uses in my Garden

Feature Tree
Avenue Planting
Shade Tree
Street Tree

Nyssa sylvatica 'Forum' works in an:

Formal Garden – structured, symmetrical design with clipped shapes.
Modern Garden – sleek, minimal, and design-led planting.
Woodland Garden – layered, naturalistic design under dappled light.
Low-maintenance Garden – resilient choices for easy care and year-round appeal.

Is Nyssa sylvatica 'Forum' Evergreen or Deciduous?

Nyssa sylvatica 'Forum' is an Deciduous (Defoliates throughout colder months) Tree

Mature Height & Width

Mature Height: 10m - 15m Approximately

Mature Width: 6 m – 10 m

Nyssa sylvatica 'Forum' is expected to grow Approx. 30 – 60 cm per year.

Growth Rate of Nyssa sylvatica 'Forum'

Nyssa sylvatica 'Forum' is expected to grow Approx. 30 – 60 cm per year.

They are considered to have a:

Medium Growth Rate

Frost Tolerance & Ideal Climate to plant Nyssa sylvatica 'Forum'

Is Nyssa sylvatica 'Forum' frost tolerant?

Nyssa sylvatica 'Forum' is Frost Hardy – Survives heavy and frequent frost without damage.

Does Nyssa sylvatica 'Forum' Flower?

Nyssa sylvatica ‘Forum’ produces small, greenish-yellow flowers in late spring. While subtle and not ornamental, these nectar-bearing blooms support early pollinators and lead to small bluish-black berries that ripen in late summer.

Does Nyssa sylvatica 'Forum' flower?

Yes - Flowers

Flowering Period:

Spring

Flower Type:

Not Applicable

Flower Colour:

White

Is Nyssa sylvatica 'Forum' an Australian Native Tree?

No

Nyssa sylvatica 'Forum' is Native to Native to eastern North America, where Nyssa sylvatica grows in wetlands and forests. ‘Forum’ is a selected cultivar valued for its symmetrical form and intense autumn colour.

What is the Wildlife Value of Nyssa sylvatica 'Forum' ?

Its nectar-rich blooms attract bees and beneficial insects, while the late-summer fruits are highly valued by birds. The dense, pyramidal canopy provides excellent shelter and nesting habitat, making it an outstanding tree for enhancing biodiversity in parks, large gardens and naturalistic plantings.

How much Sunlight does Nyssa sylvatica 'Forum' need?

Nyssa sylvatica 'Forum' will thrive best in:

Full Sun

Preferred Soil?

Nyssa sylvatica ‘Forum’ performs best in moist, well-drained loam or sandy loam soils and prefers slightly acidic to neutral conditions. It may struggle in alkaline or compacted soils unless improved with organic matter to enhance structure, moisture retention and aeration. Keep soil evenly moist during establishment, then maintain deep, occasional watering as the tree matures to support steady growth, strong root health and its renowned autumn foliage display.

Is Nyssa sylvatica 'Forum' Drought Tolerant?

Is Nyssa sylvatica 'Forum' Drought tolerant?

As a young tree it requires regular watering, and once established ‘Forum’ offers moderate drought tolerance. It performs best in moist, well-drained soils but withstands occasional dry periods with deep, infrequent watering. Consistent moisture helps maintain its signature vibrant autumn colour.

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How To Plant Your Nyssa sylvatica 'Forum'

Site: Choose a well-drained position in full sun to part shade with room for the canopy to develop.

Soil preparation: Enrich the planting area with quality compost and aged manure for a strong establishment phase.

Hole: Dig twice as wide as the root ball and the same depth.

Planting: Position level with the surrounding soil, backfill gently, firm in, then water deeply to settle the roots.

Recommended Planting Spacing For Your Nyssa sylvatica 'Forum'

Feature tree: 3 to 4 metres apart to allow the full canopy and form to develop.

Avenue planting: 3 metres apart for a uniform soft-textured avenue.

Nyssa sylvatica 'Forum' is expected to grow Approx. 30 – 60 cm per year.

Medium Growth Rate

Long Term Care For Your Nyssa sylvatica 'Forum'

Watering: Water deeply twice weekly through the first 12 months. Once established, reduce to once weekly in dry periods. Mulch helps maintain consistent moisture.

Mulching: Apply a 5 to 7 centimetre layer of organic mulch over the root zone, keeping it 5 centimetres clear of the trunk.

Pruning: Minimal pruning required. Light tip prune in late winter to maintain shape, and remove lower branches as the tree grows to develop a clean feature trunk.

Fertilising: Apply a slow-release general-purpose fertiliser in early spring and again in autumn for steady growth and consistent foliage colour.

Pest and disease: Hardy against most pests and diseases. Occasional scale or caterpillar inspection in warm humid conditions is all that's needed.

Planting Your Nyssa sylvatica 'Forum' in Different Soil

Nyssa sylvatica performs best in well-drained loam or sandy loam with a slightly acidic to neutral pH. Adaptable to a wide range of soils when drainage is improved with organic matter.

Sandy soil: Free-draining and ideal. Mulch well to maintain consistent moisture.

Clay soil: Improve drainage with gypsum and organic compost before planting.

Loam: The preferred soil for steady root development and consistent growth.

pH: Slightly acidic to neutral preferred. Mulch with composted leaf litter to maintain levels naturally.

Frequently Asked Questions

Frequently Asked Questions

Q: What is the best use for Nyssa Sylvatica 'Forum' in a garden?

A: This adaptable black gum tree is well-suited for parks, gardens, and larger landscapes, providing year-round visual interest and stunning autumn foliage.

Q: How tall does Nyssa Sylvatica 'Forum' grow?

A: The mature height typically ranges from 10 to 15 meters, making it an excellent choice for various garden settings.

Q: Is Nyssa Sylvatica 'Forum' drought-tolerant?

A: While it exhibits moderate drought tolerance, regular watering is advisable during dry periods, especially in the establishment phase.

Q: When should I prune Nyssa Sylvatica 'Forum'?

A: Pruning can be done as needed to maintain shape and remove any dead or overcrowded branches. Light pruning is generally sufficient.

Q: Can I plant Nyssa Sylvatica 'Forum' in urban areas?

A: Yes, this black gum tree is tolerant of urban conditions and a range of soil types, making it suitable for city gardens and landscapes.