Sarpo Mira Potato Seed

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Sarpo Mira Seed Potatoes

Bag of Sarpo Mira Seed Potatoes

Sarpo Mira is considered the most blight resistant variety available in the UK. Our supplier grows this one in his garden, and they are never sprayed for blight. The haulms were infected with blight but they have still produced the blight free tubers, harvested early October that you see in the picture.

A good multipurpose maincrop potato. Very useful on the allotment where blight can be an issue. The tubers are meant to be of a dry floury texture which are best suited to roasting and chipping. Also suitable as a baking potato.

This seed is a Main Crop variety for lifting when skins are set in the Autumn.

Bag Size: Pack of 2kg Potato Tubers

Pack of 2kg potato tubers

Sarpo Mira Seed Potato Grow Notes
When to Plant Seed Potatoes: April / May - Best sown direct outside
Cooking Comments: Has a dry, light and fluffy, floury texture.
Maturity: Maincrop Cover: Yes
Blight Resistance: Yes. Very High. Frost Hardy: No
Scab Resistance: Good Eelworm (PCN) Resistance: N / A
Spacing Between Plants: 30cm Row Spacing: 60cm
Plant Height: 70cm Planting Position: Sun


Yearly Average Bag Counts
Count per bag depends on the previous growing season and size of the tuber grade out, below we list the average number across a count of 10 bags of this variety.
2020: TBC    


Month Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

How To Grow Sarpo Mira Potatoes

Soil preparation for maincrop seed potatoes

Sarpo Mira Seed Potatoes - A blight resistant variety.Prepare the soil for maincrop potato beds during November or December in the year prior to growing crops. Incorporate generous amounts of organic matter or well-rotted manure, which will help improve soil structure, retain moisture and to add vital nutrients to the soil. Light sandy soils and heavy clay soils may require additional compost to aid drainage, which is very important for the successful growing of potatoes.

Order or buy your maincrop seed potatoes in late February or early March so that you have them ready to plant in April when favourable conditions allow. 

All potatoes prefer an open sunny position and it’s always advisable not to plant seed potatoes in ground that has been previously used to grow potatoes for 2 years or more. Good practice is to rotate crops each year to help reduce the possibility of spreading disease.

Maincrop seed potatoes will benefit from chitting, which is the process of placing the sets in a light, cool place prior to planting. This will encourage the growth of new shoots, giving the tubers a safe head start.

Planting maincrop seed potatoes in beds

Planting is best carried out on a dry day in April, ensuring any frost has first lifted from the soil. Lightly rake the prepared beds, in which the potato crop will be grown, so that you have a manageable tilth. Next, using a spade, dig a straight and even trench approximately 10cm deep and then place the seed potatoes at a distance of 45cm apart. If growing more than one row, space each row at around 75cm apart. Each seed potato has a rose end, which usually has the most shoots, and this end should be facing upwards. Cover the seed potatoes with soil and lightly firm down with the foot or back of the spade.

A sprinkling of potato fertiliser can then be spread over the top of the soil and water applied. If frosts are prevalent, do not over water as this could cause damage should the water later freeze. Also to prevent damage to the emerging shoots, it is recommended you cover the planted trenches with cloches until the new shoots appear. Regular watering during dry spells will ensure the young tubers swell and stay firm and healthy.

Sarpo Mira Potatoes, Lift in the AutumnGeneral aftercare

General aftercare consists of regular watering, especially during dry periods. Maincrop potatoes need quite a lot of water so it’s important the plants are not allowed to dry out.

As the young shoots grow you should “earth up” the potato stems to protect them from frosts and to ensure the new younger potatoes, nearest the surface are not exposed to light. If they are exposed to light they will begin to go green, making the potatoes inedible.  

During the growing season additional fertiliser can be applied every 2-3 weeks to ensure plants obtain sufficient nutrients to keep them growing strong and healthy.

Pests and diseases

The most serious problem associated with all potatoes is blight, which can be more of a problem during the warmer summer months. If detected, then spraying the plants with a proprietary fungicide can be an effective preventative treatment.

Eelworm can also be a problem in some areas. It is highly recommended you only buy certified maincrop seed potatoes or plant resistant strains. Good hygiene and crop rotation can help avoid many common plant diseases.

Blackleg is a bacterial infection, which is also a known problem but it is usually confined to individual plants rather than the whole crop. Again, good hygiene and crop rotation is key to avoiding this particular disease.

Another common problem is potato scab, which can make the skins look a little unsightly. However, this problem does not affect the taste or quality of the potato in any way. To help avoid scab, ensure plenty of organic matter is incorporated into the soil during late autumn. Slugs can damage tender leaves and stems so “earthing up” regularly will help to keep them away from the plants.  

Harvesting and storage

Maincrop potatoes can be harvested after about 15-20 weeks or at the end of the growing season. They can be left in the soil until the first frosts and then lifted, dried and stored in a dark, airy, frost-free place. Hessian or paper sacks are best for storing. Avoid using polythene bags or sacks as potatoes will sweat and rot.

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Customer Reviews
Sarpo Mira Seed Potato
Write a Review and share your opinions!
7 Reviews:

Excellent harvest
02 October 2022  |  Roger

After 40 years of allotment gardening this is the first year I have grown Sarpo. With drought conditions most of summer I was totally surprised at the size and condition of the crop. No disease, large potatoes and excellent when roasted. Will be ordering next year.

22 February 2016  |  Jean

by watching some of the people that have grown sarpo mira and the results that they had, i decided to get some for myself which i will be planting on my allotment, . hope i get the same results

Great Main Crop and Storage potato
04 January 2016  |  Dean

I cannot recommend this potato highly enough. I'm a new allotment holder and these potatoes weren't touched by pests and disease when compared to the Maris pipers I grew. I had a wonderful yield and still have plenty left.

Sarpo Mira
02 November 2015  |  John

I grow Sarpo Mira this year. Brilliant. Will definitely be ordering this year for next year

Sarpo Mira Potatoes
04 January 2015  |  Jeff

These will happily grow through the worst blight seasons and they are almost immune to slugs with very little damage. They do give a heavy crop and keep well for months. I would advise eating the ones longer than 7 inches rather than storing as they tend to go hollow in the middle. Seem to be good all round eating potatoes too as they are fine for boiling but excellent for chips and roasting.

Sarpo Mira Potatoes
21 December 2013  |  Neil

As a keen vegetable gardener I've grown various variety of potatoes but this year was the first time of growing this variety. Well I was amazed at the size, quantity and quality of the tubers when I started harvesting. Then even more surprised at how well they baked, chipped mashed and roasted, they also tasted great too. Will be growing another couple of rows in 2014

Sarpo Mira Potatoes
17 January 2013  |  Jenifer

As a first time potato grower these were a dream. We planted them out in early summer and they produced a lovely crop of pale pink skinned, medium sized potatoes. I have roasted them and boiled them and they have received approval from all who have eaten them. They have a delicious dense flesh, well suited to baking, mash and roasting. They resisted blight despite the abnormally wet conditions last year. They are definitely ones we are very keen to sow again this year.