Rose Mallow Silver Cup
$4.95
Lavatera Trimestris
- Seed Count 100
- Show Stopper
- Biennial
- Height 60 cm
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Description
Winner of the Royal Horticultural Societyโs prestigious Award Of Garden Merit, Rose Mallow Silver Cup has large hibiscus-like flowers, that are pink with a silver sheen.
It is a fast-growing plant that is well-regarded for its large, showy blooms.
A strong compact plant growing some 60cm tall by 40cm across that is suitable for containers or to plant on mass in garden beds.
Grows in pretty much any soil so long as it gets sunshine and shelter from winds. Plus It makes a great cut flower.
| Method: Sow direct or seedlings | Soil Temp: 10ยฐC - 25ยฐC |
| Cool Mountain: Nov - Dec | Position: Part sun |
| Arid: Aug - Jan | Row Spacing: 30 cm |
| Temperate: Sep-Nov, Mar-Jun | Planting Depth: 3 mm |
| Sub Tropical: May - Oct | Harvest: 140 Days |
| Tropical: Jun - Aug | Plant Height: 60 cm |
๐ฑ Sowing Lavatera: In Trays vs. Direct
Lavatera can be started in seed trays or direct sown into the garden, and each method has its place depending on your space, timing, and goals.
Sowing in Trays (Indoor or Protected Start)
Starting in trays is ideal if:
- You’re planting in early spring and the soil is still cool.
- You want to give your seedlings a head start in a controlled environment.
- You want to manage spacing and transplant strong seedlings only.
How-To:
- Fill trays with a quality seed-raising mix.
- Sow seeds about 5 mm deep.
- Keep trays moist and in a warm, bright location (15โ21ยฐC is ideal).
- Germination usually takes 10โ21 days.
- Transplant once seedlings have 2โ3 sets of true leaves and the weather has warmedโafter last frost in cool areas.
๐ผ Tip: Lavatera doesnโt love root disturbance, so transplant gently and avoid letting them sit too long in trays.
Direct Sowing in the Garden
Perfect if:
- You’re in a frost-free zone or it’s late spring.
- You want to naturalise them in borders or wildflower-style beds.
How-To:
- Sow seeds directly where they are to grow, 5 mm deep.
- Water in and keep moist until germination.
- Thin seedlings to about 30โ45 cm apart once theyโre up.
๐ผ Tip: Sow after the danger of frost has passed. Lavatera likes warm soil and good sunlight to get going.
๐ Seed Pre-Treatment
Lavatera seeds do not require pre-treatment like stratification or scarification. Theyโre ready to go straight from the packetโjust sow and water!
If you want to give them a boost, a short soak in room-temperature water for a few hours before sowing can help speed up germination, but itโs not essential.
๐ชด Soil & Position
Lavatera is beautifully unfussy, but for best results:
- Soil: Free-draining, moderately fertile soil is ideal. Theyโll tolerate poor soils but wonโt thrive in heavy clay unless itโs been improved with compost and sand.
- pH: Slightly acidic to neutral (6.0โ7.5).
- Position: Full sun is essential. Aim for at least 6 hours of sunlight a day. In partial shade, growth becomes leggy and flowering suffers.
- Spacing: 30โ60 cm apart depending on variety.
๐ผ Tip: In coastal or windy gardens, a bit of shelter helps prevent snapping or leaning in taller varieties.
๐ฟ Care & Maintenance
Lavatera grows fast and asks for little. Hereโs how to keep it blooming beautifully:
- Watering: Water well during establishment, then reduce. Once established, itโs quite drought tolerant. Avoid overwateringโroots hate soggy feet.
- Feeding: Light feeders. A handful of slow-release fertiliser at planting is plenty. Too much nitrogen = more leaves, fewer flowers.
- Mulching: Apply mulch around the base to retain moisture and suppress weeds.
- Pruning: Pinch out the tips of young plants to encourage bushiness. Deadhead spent blooms to keep them flowering longer.
- Staking: Taller varieties may need support, especially in exposed areas.
๐ผ Companion Planting Guide
Lavatera is a lovely companion in the flower and veg patch alike.
Great companions:
- ๐ป Sunflowers โ share similar growing conditions and attract pollinators.
- ๐ Lavender and salvia โ encourage bees and beneficial insects.
- ๐ฝ Corn or tomatoes โ Lavatera draws pollinators to increase fruit set.
- ๐ฅฌ Lettuce and spinach โ benefit from shade created by Lavatera in summer.
Avoid:
- Plants that need rich, moist soilโlike cucumbers or melonsโas they have different needs.
โ๏ธ Harvesting
Lavatera is grown more for beauty than for long vase lifeโbut it can be used in arrangements if cut at the right time.
- For Cut Flowers: Harvest when buds are just opening. Use clean snips and place straight into water.
- For Garden Enjoyment: Deadhead regularly to prolong flowering, especially in long summers.
๐ Common Issues & Fixes
Hereโs a handy table for troubleshooting:
| Issue | Symptoms | Fix |
|---|---|---|
| Leggy, sparse growth | Long stems, few flowers | Not enough sun โ move or cut back and wait for regrowth |
| Powdery mildew | White powdery coating on leaves | Improve airflow, avoid overhead watering, treat with organic fungicide |
| Aphids | Sticky leaves, distorted tips | Blast with hose or use insecticidal soap |
| Drooping or yellowing | Water stress (too much or too little) | Check drainage and watering schedule |
| No flowers | Healthy growth but no buds | Too much nitrogen โ cut back feeding |
๐พ Seed Saving Guide
How to Save Seed:
- Let a few flowers go to seed โ stop deadheading at the end of the season.
- Wait for seed pods to dry and turn brown on the plant.
- Collect pods on a dry dayโcut whole stems and place in a paper bag.
- Dry indoors for 1โ2 weeks.
- Shell out the seeds and remove any chaff.
- Label and store in a cool, dry, dark place in paper envelopes or airtight jars.
๐ผ Tip: Lavatera can self-seed freely. If you want to control it, collect seeds before they fall.
๐ธ Final Thoughts
Lavatera is one of those plants that brings effortless joy to the garden. Itโs fast, floral, and flexibleโjust the kind of plant that rewards beginner gardeners and fills out a patch with ease. Whether youโre sowing a bee-friendly border, adding soft pastels to your cut flower mix, or simply chasing a bit of garden colour, Lavatera delivers.
If youโre new to seed-starting, this is a perfect one to grow your confidence. And if youโre a seasoned grower, Lavateraโs cheerful charm fits right into a well-planned, pollinator-rich garden.
๐ฟ Soak in the satisfaction of growing from seed to bloomโLavatera will be waving her soft petals at you in no time.
Postage Charge
Orders under $35 attract a $4.95 shipping charge. Orders $35 and above have free shipping.
Order Times
Seed orders are normally dispatched within three business days. You will receive an email when seeds are mailed out.
Postage Days
Seeds are mailed out Tuesday to Friday at 1pm. Except for the Friday of long weekends.
Postage Times
WA 2-3 Days: SA,NT 3-5 Days: NSW, ACT, QLD, VIC: 5-7 Days
Carrier
We use Australia Post Letter Postage for the majority of orders
Not only are our seeds packed in recycled paper envelopes, we keep the theme going when we post out website orders. To protect your seeds from moisture and the letter box munchers (snails), we use a very special plastic free material made from plants. They are then put into recycled mailing envelopes. Green all the way ๐๐ฟ
Delivery Guarantee
We take great care to make sure your seeds arrive safely. If your order is lost or damaged in transit, weโll happily send a replacement. Unfortunately, we canโt replace or refund orders that arrive later than the estimated delivery date, as delays can sometimes occur that are outside our control.
Please note that all dispatch and delivery times listed are estimates only. While we do our best to post promptly, delivery timeframes can vary due to postal service delays, weather events, or other unforeseen circumstances. Weโre unable to take responsibility for any loss, damage, or cost that results from a late delivery.
An order is not considered missing until at least 20 business days have passed from the postage date. Youโll receive an email once your seeds have been posted, letting you know theyโre on their way. If you donโt see it in your main inbox, please check your Spam or Promotions folders as sometimes our emails like to hide there.




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