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GREVILLEA triloba

Stock: Available

$3.60

Family: Proteaceae

Subfamily: Grevilleoideae

Characteristics: Shrub 1 m spread 4 m

Seed per packet: 10

A spreading shrub 1 metre in height and up to a 4 m spread Grevillea triloba has three lobe prickly leaves that are green above and pale with hairs beneath.

The mass of are highly perfumed white to cream flowers occur on intense heads from autumn to winter.

Grevillea triloba is a useful plant for low hedges or as a cover plant.

Endemic to an small area of the mid-west coast of Western Australia.

Prefers a light to medium soil in an open sunny position, drought resistant but frost tender.

Although seed can be sown most of the year in Australia seed is generally best sown in spring or autumn in temperate climates, avoid the coldest and hottest months of the year. The optimum germination temperature for germination is around 18-22°C.

Larger seed of Grevellia species can be carefully nicked with a sharp knife to expose the embryo slightly prior to sowing, this can assist with the uptake of moisture and can speed germination.

  1. Soak seed overnight in warm water.
  2. Sow seed on a porous seed raising mix and cover lightly. Do not bury seed deeply.
  3. Place in a warm shaded or semi shaded position to avoid dying out.
  4. The growing medium should be well draining but should remain damp between watering. Keep moist but not too wet as the seed may rot. Do not let the growing mix completely dry out.
  5. Germination should occur in 21-60 days depending on the temperature and conditions. 

Pre-treatment of smoke: Not considered critical for this species but may be beneficial.
Many members of the Proteaceae are responsive to pre-treatment of smoke. Although germination will often occur without smoke treatment it has proved to be beneficial in reducing the number of days to germination and increasing germination rates in many species.
Smoke treatments are simple and can be undertaken either by soaking the seed overnight or by applying to the surface after sowing, both provide good results. Smoke treatments available by clicking here.

General note: Seeds of many natives are dormant and require specific conditions or pre-treatment for germination.
Do not be too hasty to discard seed that does not germinate, seeds will often lay dormant until the conditions are similar to their natural requirements for germination to occur. Containers put to one side will often surprise long after they were discarded.

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