Plantflix
Grevillea Robusta Silver Oak Seeds Collection
Grevillea Robusta Silver Oak Seeds Collection
Grevillea Robusta, known as Silver Oak or Silky Oak, is an Australian evergreen tree. It thrives in bright, direct sun, so place seeds in a sunny indoor spot for tall, robust growth. The plant features green, fern-like leaves with silvery undersides. Seeds are offered for the 2026 growing season and can be sown using a 12 Cavity Greenhouse with Soil Pellets or Soil Pods and Liquid Fertilizer. For germination details, see the seed guide.
To start, pre-soak seeds 12–24 hours in warm water, then sow in a well-draining medium (sandy coconut coir/peat-based mix) at 1/4" deep, with 1–3 seeds per 2–4" nursery pot. Maintain 70–85F under a humidity dome; germination occurs in 14–60 days. Seed prep includes pre-soak, scarification, stratification, or none; time to maturity is 1 year+; not pet-friendly.
📋 Product summary:
- Grevillea Robusta is commonly known as Silver Oak or Silky Oak.
- Thrives in bright direct sun; best growth with a sunny indoor spot.
- Germination typically occurs in 14–60 days under good conditions.
- Seed prep options include pre-soak, scarification, stratification, or none.
- Sow 1/4 inch deep; 1–3 seeds per nursery pot or soil pod.
- Use a 2–4 inch nursery pot and a well-draining soil mix (sandy coconut coir/peat-based).
- Time to maturity is 1 year+; outdoors, plant can reach up to 100 feet.
- Not pet-friendly for households with cats or dogs.
- Sowing setup recommended: 12 Cavity Greenhouse, Soil Pellets or Soil Pods, and Liquid Fertilizer.
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difficulty |
beginner | intermediate | advanced |
|
germination time |
14-60 days |
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depth |
1/4" |
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spacing |
1-3 seeds per nursery pot or soil pod |
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recommended planter |
2“-4" nursery pot(no terra cotta for germination) |
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time to maturity |
1 year+ |
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seed prep |
pre-soak | scarification | stratification | none |
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method |
greenhouse | paper towel method |
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temperature |
70F - 85F |
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description |
evergreen tall tree with green fern-like foliage and silvery undersides |
|
difficulty |
beginner | intermediate | advanced |
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growth speed |
slow | medium | fast |
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size of plant |
up to 100' if grown outdoors |
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light |
full sun | partial sun | shade | grow lights |
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soil |
well-draining sandy coconut coir/peat-based potting mix |
|
temperature |
warm | cool |
|
pet-friendly |
cats | dogs | no |
|
pests |
scale, fungus, root rot |
|
fertilization |
heavy | moderate | light |
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📦 Nationwide shipping policy & returns
📦 Nationwide shipping policy & returns
NATIONWIDE SHIPPING:
Some free shipping products may be limited to the lower 48 states, as indicated by our shipping estimator tools and checkout cart. Outdoor living, home, and garden items ship nationwide. Standard shipping fees are confirmed at checkout based on your address and provider selection. Free shipping items incur zero fees at checkout. Tracking details are emailed instantly upon order fulfillment.
NATIONWIDE SHIPPING RETURNS: 30 day returns.
We accept returns of unused products that are defective or not defective. Your return must be processed within 30 days of the date of purchase. We do not process exchanges. We will provide a shipping label by email, you are responsible for bringing the return to the shipping provider.
FREIGHT PRODUCT RETURNS: no returns or exchanges.
There are no returns, exchanges or refunds for products delivered via freight. REFUNDS: The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the returned product is received and processed.
NATIONWIDE PRODUCT REFUNDS:
The cost of the return shipping and a 6% credit card processing/restocking fee will be deducted from your refund amount. The refund balance will be distributed to you once the order is canceled and the returned product is received and processed.
Let customers speak for us
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Plant was well packed and shipment was very fast. Received a very nice fully rooted plant in the pot!
The organic garden soil is doing very well in my garden bed. The company was professional, nice, and accommodating to my needs. They provide many types of things for your landscaping at a reasonable price.
Product was delivered promptly and the quality of the product was very good, as hoped for. I was thrilled to receive the product so quickly! Thank you!
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My new babay arrived safely and only lost two little leaves so far. The first one I ordered from different shop arrived with two leaves attached that fell off within ten minutes of unboxing and 22 leaves that had came off during shipping. So glad she arrived looking as beautiful as i was hoping. Also had a surprise red arrow syngonium cutting that’s beautiful. Also customer service was amazing. Will definitely order from them again. Hoghly recommend this shop.
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Enjoyed putting them together
I think I’m in love! This beauty came delicately packaged. Seemed to have no stress at all from shipping. I live in Miami, I was worried about shipping all the way from California. To my surprise she arrived well taken care of already. I can tell this grower takes pride in caring for these babies. Shipping was fast. I just ordered again same day!
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lovely olive jar, attractive to keep on display. And useful too.
Fast delivery . Product exactly matches description. Easy to contact with same day replies. We will use them again.
Great job from growing to shipping
Quality was excellent. Perfect for my Dad’s grave site, honoring a proud Marine.
Appreciate the extra effort to get the product to me when needed. The delivery was made with speed and consideration, very much appreciated
