Certified Seed Potato Royal Blue
Certified Seed Potato Royal Blue (Solanum tuberosum) is an oval-shaped potato with dusky purple skin and yellow flesh. Royal Blue has a slightly sweet nutty flavour and is a good all round potato, performing well for salads, boiling, mashing, roasting, and chips.
1 kg is approx 8-12 potatoes.
Certified seed potatoes are grown in controlled field conditions to ensure they are true to type and free from disease. Therefore plants will show vigorous growth and a greater yield.
For best results plant after frosts have finished in your area. Before planting, spread potatoes out in a well-lit warm place for several weeks so they get some short thick sprouts. Tubers can be cut so one or two eyes are evident on each piece but ensure cut pieces are allowed to dry before planting to minimise risk of rotting. Ensure pieces are not too small as this can reduce the yield.
Plant tubers about 15 cm deep in the soil and then cover with 25-30 cm of mulch or well prepared soil, making a hill around the planted tubers. Potatoes are usually ready for harvest 110-130 days from planting, or when the foliage has completely yellowed and stopped growing, but small early harvests can be taken once new potatoes reach a useable size. These Chats, or new potatoes are delicious but bear in mind this will reduce the yield of larger spuds.
Supplied as dormant tubers.
- Suitable for areas with full sun
- Plant 30cm apart
- Grows to 30cm high
- Ideal Growing Regions:
- View growing regions on the Climate Map
Availability: OUT OF STOCK/OUT OF SEASON! Available to order from mid-June to August, unless sold out.
Buy 2 or more and get them for $7.90 per item
*Price adjustments will be reflected in the cart.
Out of stock
Send me an email when this item is back in stock.
Not for the following states due to quarantine restrictions
At Garden Express you can make a purchase with confidence. Our living merchandise is normally guaranteed to grow if our free growing guide instructions are followed. Any guaranteed items that do not grow within 3 months (6 months for dormant items) will be replaced, credited to your account or fully refunded.
The exception to this guarantee is discounted, end of season stock which is sold on an ‘as is’ basis. Generally this stock is sound but should be planted as soon as possible and may not perform as well as normal in season products.
Delivery is normally via Australia Post with larger orders delivered via StarTrack Express* courier. We service virtually all areas of Australia with only those areas not serviced by these organisations being excluded (e.g. remote islands and Territories such as Christmas Island, Lord Howe Island, Norfolk Island, Cocos Islands, Groote Eylandt). We do not deliver outside Australia but happily deliver orders placed from overseas for Australian delivery. Our regular delivery charge for basic items is $11.50 Australia-wide, regardless of the number of items ordered. Due to their higher freight costs, bulky or heavy products such as roses, large pots and a small number of hard goods have higher delivery charges. The summary of all current delivery options is:
- Orders NOT containing Roses, 120mm and larger pots/grow-bags, Bare-rooted Trees, Composting Buckets, nor any items with individually specified delivery charges, all delivered at one time, will incur the normal $11.50 freight charge. These items are referred to as “Basic Items“.
- Orders containing bush Roses, 120mm up to 155mm pot/grow-bags, Composting Buckets, together with other products delivered at the same time will incur a $16.90 freight charge.
- Orders containing Trixie Fruit Trees, Dwarf Fruit Trees, Lilac Trees, Standard and/or Patio Roses, 160mm up to a 200mm pot/grow-bags, together with other products delivered at the same time will incur a $25.50 freight charge.
- Orders containing Bare-rooted Trees, Bagged Trees, Weeping Roses, Larger items or pots/grow-bags greater than 200mm, together with other products delivered at the same time, will incur a $35.00 freight charge. Remote areas may incur an additional Freight charge but we will notify customers individually if this is the case.
- Orders containing products with explicitly stated delivery charges will incur charges as detailed in the individual product description.
- Some items may be delayed due to climatic or growing habits prevent them from being harvested at the time of being offered for purchase. You will be offered a choice to wait until all items on your order are available or to receive what is currently available for an additional freight charge of $4.00.
- We continue to maintain the simplest form of postage costs for the large variety of products we range, however in occasional circumstances of oversized orders and/or delivery location, the cost of freight can significantly impact delivery of an order therefore we reserve the right to refuse the order or contact the customer to discuss freight options and pricing.
Orders containing products from two different seasons (eg Rose or spring bulb pre-orders) that require separate deliveries will incur two delivery charges at the relevant rates (unless a free freight offer applies). A $4.00 Quarantine Inspection Surcharge applies in addition to the Delivery Charge for orders delivered to Tasmania, Northern Territory and Western Australia due to the increased complexity of quarantine requirements.
As quarantine inspections apply to each delivery, 2 quarantine charges will apply where orders contain products from different seasons. *Please note that if you order large items (eg Patio, Standard or Weeping Roses, Fruit Trees) you must specify a street address for the delivery address. StarTrack Express generally do not deliver to PO Boxes or RSD addresses so your order will be held until a suitable address is obtained. In rural areas, StarTrack may deliver to physical addresses such as general stores that act as Australia Post agencies but we suggest you check with them first. Where ‘Free Delivery’ vouchers apply to an order, details of the voucher should be entered in the “Your message to us” field. Orders (except Pre-orders) are normally despatched within 7-14 working days from the time of ordering during busy periods. Delivery times may be extended during peak periods (typically following the release of the latest catalogue), extended public holidays, if extreme weather conditions are not suitable for live plant transport or as detailed in the product description.
Individual items may be back-ordered to avoid delaying the delivery of other items. Please allow additional delivery time for orders to Tasmania, Northern Territory and Western Australia due to quarantine restrictions.
Please note: Some orders may not be possible to parts of Australia due to quarantine and some items may carry unique delivery charges. Check full delivery policy.
Common Name: POTATOES
Also known as Certified Seed Potatoes
Botanical Name: Solanum tuberosum
Family Name: Solanaceae
Plant Type: Tuber
Planting Time: Winter to Spring
Flowering: Summer to Autumn
Planting Width: 20 – 25cm
Positioning: Full Sun
General Information: Known throughout the world as a staple food that can be prepared and eaten a number of different ways, potatoes can be grown in most parts of Australia and will be ready to harvest 60-90 frost free days after planting. Before planting, spread potatoes out in a well-lit warm place for several weeks so they get some short thick sprouts. Tubers can be cut so one or two eyes are evident on each piece but ensure cut pieces are allowed to dry before planting to minimise risk of rotting. Also, cutting into pieces too small can reduce the yield. Plant tubers about 15 cm deep in the soil and then cover with 25-30 cm of mulch.
Soil: Well drained, humus rich soil is required, but can also be grown in ‘no dig’ tyres, drums and large pots.
Watering: Need to be kept well watered. Potatoes will grow for longer periods of time when soil temperatures remain low and soil is moist, this results in a bigger harvest too.
Fertilising: Prepare soil well with a well-rotted animal manure or complete fertiliser before planting. Mulch over the emerging shoots with a deep straw mulch to encourage the formation of more tubers and to ensure the roots are not exposed to the sun. Liquid feed 3 – 4 times during the growing season.
Pruning/Harvest: Harvest when the leaves begin to die back, dry tubers as quickly as possible and store in a dark cool place. Potatoes exposed to light will turn green and these potatoes are poisonous and should not be eaten under any circumstances. Potatoes harvested early as ‘new’ potatoes do not store well.
Pests: Potatoes suffer from many pests and diseases; rotating crops every 3-4 yrs to avoid build up of pests and diseases in the soil and growing only Certified Seed Potatoes will help to avoid this.
Likes: Long periods of mild weather; this will help build a good crop.
Tips: Potatoes can be grown all year round in areas without heavy frost but as the weather gets warmer the risk of pest and disease increase.
QUARANTINE ISSUES: We are not permitted to send potatoes to WA, TAS & NT under current quarantine laws.
Establish which coloured region you live in and then consider the varieties listed as typically suited to that area. The Australian Climate Guide map is intended as a guide only as climatic conditions vary between specific locations. Factors such as local altitude, wind and the proximity of hills, mountains and bodies of water can cause variations from the generalised climate map. Note also that although a plant may be listed as suitable for a particular region, it may still require protection from extremes such as frost or strong winds. You should also consider its requirements for sun, shade and water.
Remember that you can often extend the range of plants that you can grow by creating micro-climates within your garden. Planting under trees, beside brick walls or in the shelter of a building, on high or low points in the garden can all have an effect. Even planting by a pond or surrounded by rocks can be used to advantage. Part of the joy of gardening can be experimenting and nothing is more pleasing that achieving success with a plant that is not usually seen in your area.
The map is based on Australian Bureau of Meteorology 30 year climatology data from 1961-1990. The zones are based on both temperature and humidity:
- Tropical – hot humid summer .
- Mild Tropical – warm humid summer
- Semi-arid – hot dry summer, cold winter
- Arid – hot dry summer, cold winter
- Temperate – warm summer, cool winter
- Cool – mild-warm summer, cool winter