Grevillea lavandulacea Schltdl. 'Cromer Form'

Common name(s): Grevillea 'Cromer Delight', Lavender Grevillea 'Cromer Form'

Family: Proteaceae Subfamily: Grevilleoideae

Plant

Taken by Ken Harrington on 8th August, 2014 at Cromer, South Australia

Leaves

Taken by Ken Harrington

Flowers

Taken by Ken Harrington

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Plant Properties

Origin(s)

Australia

SA: SL

Plant Type

Evergreen Groundcover

Climate Range(s) - Habitat

Temperate Cool, Temperate Warm

Temperate Cool,

Temperate Warm

Climate Range(s) - Tolerance

Arid-Semi / Steppe, Oceanic, Temperate Cool, Temperate Warm, Mediterranean

Arid-Semi / Steppe,

Oceanic,

Temperate Cool,

Temperate Warm,

Mediterranean

Aspect Range(s)

Sun - Full, Shade - Dappled

Sun - Full,

Shade - Dappled

Habitat Range(s)

Garden, Forest - Grassy, Heath, Landscape, Open Woodlands, Sclerophyll Forest - Dry

Garden,

Forest - Grassy,

Heath,

Landscape,

Open Woodlands,

Sclerophyll Forest - Dry

Habitat Zone(s)

Dry Slopes, Exposed, Exposed Stony embankments, Open areas, Scattered, Understory

Dry Slopes,

Exposed,

Exposed Stony embankments,

Open areas,

Scattered,

Understory

Mature Height

350-400mm, 400-450mm, 450-500mm

350-400mm,

400-450mm,

450-500mm

Mature Width

900mm-1m

Plant Shape

Prostrate

Growth Rate

Moderate

Maturity

2-4 yrs

Life Span

5-10yrs

Leaf Properties

Colour (front)

Green-grey

Colour (back)

Green-grey

Shape(s)

Elliptical

Linear

Elliptical,

Linear

Aroma

None

Texture (front)

Glabrous

Pubescent

Glabrous,

Pubescent

Slightly

Texture (back)

Glabrous

Pubescent

Glabrous,

Pubescent

Slightly

Leaf Length(s)

10-12.5mm

Leaf Width(s)

1.5-2mm, 2-2.5mm, 2.5-3mm, 3-3.5mm, 3.5-4mm, 4-4.5mm, 4.5-5mm

1.5-2mm,

2-2.5mm,

2.5-3mm,

3-3.5mm,

3.5-4mm,

4-4.5mm,

4.5-5mm

Margin

Entire

Cross Section(s)

Recurved

Venation(s)

Reticulate

Arrangement

Alternate & Spiralled

Apice(s)

Acuminate Abruptly

Base(s)

Attenuate

Attachment

Petiolate

Bark / Stem / Culm Properties

Colour(s) Upper

Grey-brown , Grey-green

Grey-brown,

Grey-green

Colour(s) Lower

Brown Light

Texture(s) Upper

Smooth

Textures(s) Lower

Woody

Trunk / Stem Construction(s)

Wood Fibres / Solid

Wood - Soft

Trunk / Stem / Culm Cross Section

Terete

Flower Properties

Gender: Bisexual

Time(s)

Winter Mid - Summer

Flower Colour(s)

Red, Pink Light

Red,

Pink Light

Flower Shape(s)

Spider

Flower Size(s) Length

10-15mm

Aroma(s)

None

Arrangement(s)

Raceme

Raceme - Condensed

Arrangement Size(s)

30-40mm

Flowers per Arrangement

3-4, 4-5

3-4,

4-5

Pollinator(s)

Bees, Insects, Ants, Birds

Bees,

Insects,

Ants,

Birds

Bud Colour

Red

Fruit Properties

Type

Follicle

Shape(s)

Ovate

Outer Colour(s)

Brown, Dull

Brown,

Dull

Outer Texture

Rough / Scabrous

Hairs-Sparse

Length

10-15mm

Aroma

None

Seed Properties

Type

Achene

Colour(s)

Brown Light

Shape(s)

Oblong

Texture(s)

Smooth

Seed Dispersal

Explosion (Ballistic)

Seed Number

Root Properties

Type

Fibrous

Texture

Rough / Scabrous

Stiff

Colour(s)

Brown

Invasiveness

None

Soil Properties

Type(s)

Clay-loam, Loam, Sandy-loam, Sand, Shaley, Lateritic, Hummus Rich, Organic Matter

Clay-loam,

Loam,

Sandy-loam,

Sand,

Shaley,

Lateritic,

Hummus Rich,

Organic Matter

pH Range(s)

Acid, Slightly Acid, Neutral, Slightly Alkaline

Acid,

Slightly Acid,

Neutral,

Slightly Alkaline

Condition(s)

Moist

Moist - Dry

Moist,

Moist - Dry

Fertile , Poor , Deep , Shallow , Well Drained

Fertile,

Poor,

Deep,

Shallow,

Well Drained

Salinities

None

Waterlogging Class

W0 – Low tolerance

Watering Requirements

WR3 - never let soil dry out, WR4 - allow soil to dry between watering, WR5 - soil should remain dry 4 - 5 days between watering

WR3 - never let soil dry out,

WR4 - allow soil to dry between watering,

WR5 - soil should remain dry 4 - 5 days between watering

Other Properties / Uses

Bee Attraction

Moderate

Bird Attraction

Nectar, Insect

Nectar,

Insect

Butterfly Attraction

Poor

Frog Habitat

None

Wood Density

N/A

Coastal

2nd Line

Edible(s)

None

Fire Regeneration(s)

Seed, Ligno-tuber

Seed,

Ligno-tuber

Fire Retarding

Poor

Drought Tolerance

Good

Frost Tolerance

Good

Snow Tolerance

None

Minimum Temperature Tolerance

-4 - -2°C

Smog Tolerant

Good

Indigenous Use(s)

None

Landscape Use

Good

Street Use

None

Commercial Use(s)

Horticulture - Amenity

Maintenance(s)

Pruning - Periodical, Pruning - Shaping

Pruning - Periodical,

Pruning - Shaping

Pests/Diseases

Phytophthora cinnamomi, Scale

Phytophthora cinnamomi,

Scale

Special Purpose(s)

Garden-Park land, Garden-Heath, Garden-Container, Garden-Border Plant, Foliage-interesting, Garden-Australian Native, Garden-Coastal, Garden-Cottage, Garden-Courtyard, Garden-Flower, Garden-Hanging Basket, Garden-Informal, Garden-Mediterranean, Garden-Rock, Garden-Woodland, Groundcover, Irritating-Leaves, Phytophthora Susceptible, Shade Tolerant, Shady Dry, Shady Moist, Sunny Moist, Tolerant-Deer, Tolerant-Kangaroo's, Tolerant-Rabbits/Hares

Garden-Park land,

Garden-Heath,

Garden-Container,

Garden-Border Plant,

Foliage-interesting,

Garden-Australian Native,

Garden-Coastal,

Garden-Cottage,

Garden-Courtyard,

Garden-Flower,

Garden-Hanging Basket,

Garden-Informal,

Garden-Mediterranean,

Garden-Rock,

Garden-Woodland,

Groundcover,

Irritating-Leaves,

Phytophthora Susceptible,

Shade Tolerant,

Shady Dry,

Shady Moist,

Sunny Moist,

Tolerant-Deer,

Tolerant-Kangaroo's,

Tolerant-Rabbits/Hares

Dormancy

Winter

Humidity Requirements

Low, Medium

Low,

Medium

Vulnerability

CD - Conservation Dependent

Altitude Range - Habitat

300-400m, 400-500m, 500-600m, 600-700m

300-400m,

400-500m,

500-600m,

600-700m

Altitude Range - Tolerance

0-100m, 100-200m, 200-300m, 300-400m, 400-500m, 500-600m, 600-700m, 700-800m, 800-900m, 900-1,000m

0-100m,

100-200m,

200-300m,

300-400m,

400-500m,

500-600m,

600-700m,

700-800m,

800-900m,

900-1,000m

Annual Precipitation Range

400mm, 450mm, 500mm, 550mm, 600mm, 650mm, 700mm

400mm,

450mm,

500mm,

550mm,

600mm,

650mm,

700mm

Fertilising Requirements

FR8 - apply Australian Native Plant fertiliser every 6 mths

Wind Tolerance

Moderate Winds

Propagation

Fresh Seed, Soft Wood Cuttings

General Notes

The 'Cromer Form' is generally more of a groundcover than a shrub form of Grevillea lavandulacea and is very profuse flowering.

Grevillea lavandulacea is a very variable species with numerous forms. A very attractive garden plant.

Released to the general nursery trade Sept. 2024 by Ken Harrington through Native Plant Wholesalers of Mt. Gambier.

Propagation Notes

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Semi-hardwood Cuttings

Flowering

Aug, Sep, Oct, Nov, Dec, Jan, Feb

Cutting

Oct, Nov, Dec, Jan, Feb, Mar

Material Preparation

Firm tip cuttings or top section of young growth stem cuttings, approximately 40 - 50 mm long. Remove lower leaf sections at node. Mist frequently to keep hydrated or place in a bowl of water.

Propagating Mix

1 part Cocopeat + 1 part Perlite

Treatment

Can be slow. Keep hydrated during prep. Dip cutting in Easiroot, rooting hormone. Using a dibber, press gently into tray of mix. Water in with Previcur fungicide. Mist frequently while continuing cutting process. Place on 21°C heated bed with misters. Maintain a hothouse temperature around 21 - 25°C at plant level and hothouse environment between 75 - 95% humidity where possible. Spray fortnightly with fungicide and every 4 weeks with Seasol.

Strike Rate:- Field Stock 20 - 30 % (usually due to lack of suitable material)

Nursery Stock 60 - 70 %

Rooting time:- Field Stock 8 – 12 weeks,

Nursery Stock 6 - 8 weeks

Tube Mix:- Premium Potting Mix

Mechanically Stratified Treated Seed

Flowering

Sep, Oct, Nov, Dec, Jan, Feb

Seed Collecting

Dec, Jan, Feb, Mar

Sowing

Sep, Oct, Nov

Material Preparation

Seed can be hard to collect. Tie collection bags around branchlets to catch matured seed. Clean. Store in a cool dark place.

Viability:-

Seeds/gram:-

Propagating Mix

Premium Seed Raising Mix

Treatment

Mechanically scarifying by nicking each seed with a sharp knife or placing the seed between 2 pieces of sand paper on boards and rubbing back and forward combined with smoked water treatment will increase germination, can be difficult to germinate. Sow fresh treated seed, cover with mix, fine gravel, water in with smoked water, place outside, keep moist. Sow when night temperatures are cooler 6 -12 °C, mild day temperatures 18 - 22°C. Or if hothouse available, place on 21°C heated bed with misters. Maintain a hothouse temperature around 21 - 25°C at plant level, where possible.

Viable seeds/gram:-

Germination time:- 6 - 8 weeks

Pricking out:- 5 – 8 weeks into tubes after germination

Tube Mix:- Premium Potting Mix

2 parts Premium Potting Mix + 1 part washed sand