Re-pot in autumn when the foliage dies down, or transfer bulbs to the garden. In larger containers, lilies can be grown on for a second season in the same pot, but ensure that the top 5cm (2in)of compost is replaced with fresh compost with some added fertiliser or well rotted manure. Overwintering The potting mixes are used to grow different types of plants depending on their nutrient requirements. [1]

To guard against waterlogging, standcontainersin the rain shadow of a wall or keep in an unheated greenhouse or in a shed. Plant single large bulbs (10-12cm (4-5in) diameter) into 20-23cm (8-9in) diameter containers, or plant three to four smaller bulbs (5-8cm (2-3in) diameter) into 23-25cm (9-10in) diameter containers. Allow 5cm (2in) between bulbs and use only deep containers. Planting depth The rich nutrient content includes high quality Q4 fertilisers which are approved for use in John Innes mixes. To speed up flowering (i.e. force the bulbs) move plants to conditions of 18-21ºC (64-68ºF) when shoots appear. After flowering Ensure the compost is moist at all times, but not wet. Feed with a high potassium liquid fertiliser such as tomato feed every fortnight during summer.After 4–6 weeks, regularly apply a liquid feed, following the manufacturer’s instructions. Alternatively, at the time of potting incorporate slow-release fertilizer granules according to the manufacturer’s instructions. Most trees will thrive in a loam-based compost, such as John Innes No 3, which is fairly heavy, providing good stability. Before planting, add some pieces of broken terracotta pot to the base to stop compost washing out of the draingage holes. Acid-loving trees such as Amelanchier should be planted in loam-based John Innes Ericaceous compost. Aftercare The institution made the formulae generally available, but never manufactured the composts for sale nor benefited financially from their production. [3] Original formulae [ edit ] John Innes No.3 is the perfect choice for most mature plants including heavy feeding vegetables, salad plants, foliage and flowering plants, shrubs and containerised trees. For reasons of hygiene and safety, personal grooming products, cosmetics or items of intimate clothing cannot be returned.

A. John Innes No 3 Mature Plant Compost is great for use with larger houseplants. For any other job choose a compost that is more specific to your requirements—for example Westland Houseplant Potting Mix. No. 1 contains the lowest level of nutrients, and is used for potting on young cuttings or seedlings. [1] The base soil is amended with: After hundreds of trials, Lawrence and Newell arrived at their two standardised composts. These formulae were published in 1938, and they became known as "John Innes composts" in the horticultural trade. [2]

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Peat - Sphagnum Moss Peat in the John Innes Compost increases the total porosity and improves both the aeration and the water-retaining capacity. Peat decomposes slowly into humus. Sand - The coarse sand or grit is used as a physical conditioner to allow excess water to drain from the compost and thus prevent water-logging. It also helps to provide stability for larger plants.

A recently developed product that is suitable for use with ericaceous or ‘lime-hating’ plants. Peat-based or peat-free media with ‘added John Innes’ Gardener, blogger and allotmenteer Bryony Willis, shows you how to grow lilies in containers for a stunning summer display. Preparing the container The formulae for John Innes composts were first developed over 50 years ago and have been trusted and used by gardeners ever since. Each John Innes compost is based on a specific mix of loam, peat and grit plus a carefully balanced recipe of added plant nutrients. Can refer to either home-made garden compost or seed/potting compost: • Garden compost is a soil improver made from decomposed plant waste, usually in a compost bin or heap. It is added to soil to improve its fertility, structure and water-holding capacity. Seed or potting composts are used for growing seedlings or plants in containers - a wide range of commercially produced peat-free composts are available, made from a mix of various ingredients, such as loam, composted bark, coir and sand, although you can mix your own. Compost is also suitable for vigorously-growing plants such as tomatoes and chrysanthemums.

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Ideally keepcontainers in a cool but frost-free, airy place with strong light, such as a well-ventilated cold greenhouse or frame. As an alternative to using the original seedling mix, a special mix is sometimes used to root cuttings. The mix contains no added fertiliser or amendments, only the soil component: Plant basal-rooting lilies (or those whose habit is unknown) at a depth equal to the height of the bulb. Plant stem-rooting lilies at a depth roughly two-and-a-half times the height of the bulb. This mix contains double the amount of nutrient in John Innes No 1 to suit established plants. It is suitablefor most houseplants and vegetable plants in containers. The seedling mix is used to sow seeds and to grow young plants and cuttings until they are ready to be planted out. [4]

John Innes compost is a set of four soil-based formulae for growing media, developed at the former John Innes Horticultural Institution (JIHI), now the John Innes Centre, in the 1930s and released into the public domain. Unwanted Food or Drink Products - Once supply conditions are broken, there are a number of factors outside of our control that can affect the quality of a product. Therefore perishable goods such as food and drink cannot be returned. Although any good multipurpose compost is suitable, soil-based John Innes composts are easier to manage in terms of watering and feeding. John Innes No 3 is recommended for most lilies. If it appears too dense add 20 per cent by volume each of horticultural grit and peat-free multi-purpose compost or leaf mould to improve drainage. The formulae contain loam, peat, sand, and fertiliser in varying ratios for specific purposes. These composts are used to grow seedlings for planting out, as well as long-lived plants which remain in containers. [1] History [ edit ]Raised Beds SylvaGrow John Innes No.3 can be used as part of a raised bed medium for vegetable and strawberry growing. Simply mix one part SylvaGrow John Innes No.3 thoroughly with two to three parts loam or garden soil to gain a valuable addition of organic matter, sterilized loam and nutrients. Remember to supplementary feed as instructed above in ‘Potting On’ as vegetables are heavy feeders and will respond well.