January 30-April 20, Painting the Modern Garden: Monet to Matisse, Royal Academy, London. The role gardens played in art from the early 1860s through to the Twenties (020 7300 8090; royalacademy.org.uk).
January 30-March 13, Scottish Snowdrop Festival, multiple gardens open in Scotland (visitscotland.com).
Feb-March, NGS Snowdrop Festival, more than 100 NGS gardens across England and Wales will open through February (ngs.org.uk).
February 1 Talk, “Say it with poison” by Russell T Bowes for Buckhurst Hill Hort Society. Free entry to members, £1 to visitors (020 8504 8436). 7.30pm-9.30pm, St James’ United Reformed Church, Palmerston Road, Buckhurst Hill, Essex IG9 5NG.
February 6 Snowdrop season, Hodsock Priory, until March 6. Famous winter gardens on the 800-acre Buchanan estate. Entry £5 adults, £1 children (01909 591204; snowdrops.co.uk). 10am-4pm, Hodsock Priory, Blyth, Nottinghamshire S81 0TY
February 6&7 Hill Close Gardens snowdrop weekend; many varieties on display, winter plants and bulbs for sale, refreshments. Entry £4 adults, £1 children (ages five to 16). Free to HCG and RHS members (01926 493339; hillclosegardens.com). 11am-4pm, Hill Close Gardens, Bread and Meat Close, Warwick CV34 6HF
February 6-March 6, Orchids 2016, Royal Botanic Gardens, Kew, Surrey. The Princess of Wales Conservatory is transformed into a celebration of Brazil’s plant life and habitats (0844 995 9672; kew.org).
February 7 Austwick Hall woodland snowdrop walk open. Light refreshments and plant sales (also open every Sunday in Feb). Entry £4, children free (01524 251794; austwickhall.co.uk). Noon-4pm, Austwick Hall, near Settle, North Yorkshire LA2 8BS
February 7 Snowdrop walks at Brinton Hall through parkland and woods overlooking the lake. Formal gardens with winter-flowering trees, shrubs, hothouse and theatre. Entry: adults £4. Parking in Church Farm yard (01263 860247). 1pm-4pm, Brinton Hall, Brinton, Norfolk NR24 2QH
February 9 Talk: “From field to floribunda: The making of a garden from scratch”, by Alison Green, designer. Entry £3; members free (01582 713138; harpendengardeningsociety.org). 7.45pm-9.45pm, Roundwood Park School, Harpenden, Hertfordshire AL5 3AE
February 11-March 13, Chiswick House Camellia Show, London W4 (020 8742 3905; chgt.org.uk).
February 13 Alpine flower show and plant fair, first of the year. Entry: £2.50 adults; children and members free (01386 554790; alpinegardensociety.net). 11am-4pm, Caerleon Comprehensive School, Cold Bath Rd, Caerleon, Monmouthshire NP18 1NF
Until February 14 Grow Wild wildflower seed kits The UK’s biggest seed-sowing campaign, Grow Wild, has 100,000 free seed kits to give away to transform local spaces into colourful wildflower havens this summer. Led by Royal Botanic Gardens, Kew, the kits are designed to share with colleagues, sports clubs, friends, family or neighbours. Apply at growwilduk.com/seed-kit until midnight, February 14. Kits dispatched late March in time for spring sowing.
Until February 15 Exhibition, Squire’s Garden Centre, Feeding London: the forgotten market gardens. Free (squiresgardencentres.co.uk). Mon-Sat 9am-6pm, Sun 10.30am-4.30pm, Sixth Cross Rd, Twickenham, Middlesex TW2 5PA
February 16-17, RHS London Early Spring Plant Fair, Lawrence Hall, London. A mix of fresh winter colour and early-flowering plants (0844 338 7502; rhs.org.uk).
March 11-13, Edible Garden Show and Good Life Live, Stoneleigh Park, Warwicks. Event dedicated to grow-your-own inspiration (0871 230 3451; theediblegardenshow.co.uk).
March 20, Plant Hunter’s Fair, 10am-4pm, Dearnford Lake, Shrops. The plant hunter’s year begins (01270 811443; planthuntersfairs.co.uk).
March 19-20, Falmouth Spring Flower Show, Cornwall. A local institution; rare and exotic flora (01326 313553; falmouth.co.uk).
March 20, Rare Plant Fair, 10am-4pm, The Bishop’s Palace, Wells, Somerset. First Rare Plant Fair of the year (0845 468 1368; rareplantfair.co.uk).
March 30-April 6, The Children’s Potting Shed, National Memorial Arboretum, Staffs. Children’s activities (01283 245100; thenma.org.uk).
April 2-3, Spring Flower Show, Boconnoc House, Cornwall. The famous early showcase for Cornish talent, gardens and home grown produce (07734 366504; cornwallgarden society.org.uk).
April 15–17, RHS Flower Show, Cardiff. Kick start your gardening year at this flower show extravaganza (0844 338 7502; rhs.org.uk).
April 22-23, Gardens Illustrated Festival, Tetbury, Glos. Programme of talks on a range of horticultural topics (gardenfestival.com).
April 29-30, Toby Buckland’s Garden Festival, 10am-5pm, Powderham Castle, Devon. Specialist nurseries and popular Devon growers. Live music, local food and top-quality garden (tobygardenfest.co.uk).
May 5-8, RHS Malvern Spring Festival, Worcs. Spectacular show gardens, Floral Marquee food demonstrations (0844 338 7502; rhs.org.uk).
May 21-June 12, the Chelsea Fringe, London. Alternative garden festival celebrating community growing, outdoor performance, botanical art, walks, talks and events. Now open for submissions (chelseafringe.com).
May 24-28, RHS Chelsea Flower Show, London. The pinnacle of horticultural excellence with innovative show gardens by the world’s leading designers and the finest displays of plants (0844 338 7502; rhs.org.uk).
June 5-6, Toby Buckland’s Garden Festival, 10am-5pm, Bowood House, Wilts. Specialist nurseries, live music, local food and garden speakers (tobygardenfest.co.uk).
June 24-26, Grow London, the contemporary garden fair, London. An inspiring day out bursting with ideas on how to transform urban spaces (020 8246 4846; growlondon.com).