| Sowing (Heated Propagator Required) | Sowing (Unheated Greenhouse, Porch or Bright Windowsill) | Outdoor Sowing (Weather Permitting) |
| Sweet Peppers | French Beans | French Beans |
| Chilli Peppers | Runner Beans | Runner Beans |
| Aubergines | Broad Beans | Carrots |
| Cucumbers | Spring Onions | Peas |
| Courgettes | Swiss Chard | Parsnip |
| Pumpkin | Broccoli | Beetroot |
| Squash | Summer Cabbage | Sweetcorn |
| Melons | Cauliflower | Courgettes |
| Basil | Tomatoes | Pumpkins |
| Lettuce | Squash | |
| Spinach | Lettuce | |
| Beetroot | Spinach | |
| Parsley | Rocket | |
| Coriander | Swiss Chard | |
| Carrots | Radish | |
| Peas | Turnips | |
| Spring Onions | ||
| Pak Choi | ||
| Dill | ||
| Parsley | ||
| Coriander |
| Bare-Root Fruit Trees | Outdoor Planting Flowers | Tender Summer Annuals (18–24°C) |
| Apple trees | Tullips | Petunias |
| Pear trees | Alliums | Marigold |
| Plum trees | Foxgloves | Begonias |
| Cherry trees | Aquilegia | Geraniums (Pelargoniums) |
| Peonies | Lobelia | |
| Soft Fruits | Lupins | Salvia |
| Raspberry Canes | Campanula | Verbena |
| Blueberries | Geums | Busy Lizzie |
| Gooseberries | Hardy Geraniums | Zinnias |
| Blackcurrants | Primroses | |
| Redcurrants | Wallflowers | |
| Blackberries | Forget-me-nots | |
| Strawberries |
| Summer Bulbs & Tubers | Wildlife to Spot | Garden Jobs for kids |
| Dahlias | Bumblebees collecting nectar | Sow giant sunflowers seeds |
| Gladioli | Butterflies visiting flowers | Pick the first strawberries |
| Lilies | Ladybirds eating aphids | Earth up potatoes |
| Begonias | Baby birds leaving their nests | Water plants during dry weather |
| Crocosmia | Frogs and toads around ponds | Count bees visiting flowers |
| Cannas | Earthworms after spring showers | Make a bouquet from garden flowers |
| Plant up colourful containers or hanging baskets. |
| Hardy Annuals | Native & Ornamental Trees | Harvesting |
| Conrflowers | Rowan (Mountain Ash) | New Potatoes (Late June) |
| Calendula | Silver Birch | Broad Beans |
| Nigella (Love in a mist) | Field Maple | Early Carrots |
| Sweet Peas | Holly | Strawberries |
| Cosmos | Rhubarb | |
| Sunflowers | Hedging & Shrubs | Radishes |
| Clarkia | Griselinia | Spinach |
| Godetia | Laurel | Lettuce |
| Poppies | Escallonia | Peas |
| Privet | ||
🌱 Natural Pest Control Plants for Irish Gardens (Main planting season)
| 🌿 Plant | 🐛 Natural Pest Control | 🌼 Best Companion Plants |
| Sage | Repels cabbage moths, flea beetles, & carrot fly | Tomatoes, Broccoli, Carrots |
| Rosemary | Repels slugs, mosquitoes, bean beetles & whiteflies | Broccoli, Bush Beans, Carrots |
| Thyme | Repels deer, whiteflies, cabbage loopers & tomato hornworms | Tomatoes, Strawberries, Cabbage |
| Oregano | Repels aphids, spider mites & cucumber beetles | Cucumbers, Peppers, Broccoli |
| Calendula | Trap crop for aphids & attracts beneficial insects | Tomatoes, Peppers, Lettuce, Brassicas |
| Chives | Repels aphids, spider mites & Japanese beetles | Almost everything (avoid Beans & Peas) |
| Lemon Balm | Helps deter mosquitoes | Vegetable beds, Seating areas |
| Bee balm (Monarda) | Attracts bees & butterflies | Pollinator borders |
| Goldenrod | Attracts ladybirds, lacewings & predatory wasps | Wildlife gardens |
| Lavender | Repels flies, mosquitoes & slugs | Roses, Herbs |
| Mint (Best grown in pots) | Helps deter mosquitoes & flies | Near patios & vegetable beds |
| Dill | Attracts hoverflies & ladybirds | Broccoli, Cabbage, Cucumbers |
| Fennel | Discourages deer & attracts beneficial insects | Best planted separately |
| Coriander | Attracts ladybirds & parasitic wasps | Peas, Beans, Spinach, Broccoli |
| Globe Amaranth | Helps deter cucumber beetles | Cucumbers, Squash |
☀️ Main Companion Planting Season
| 🌿 Plant | 🤝 Companion Plants | 🌟 Benefits |
| Beans (Start indoors or sow outdoors from March) | Corn • Oregano | Natural support and attracts beneficial insects. |
| Corn | Beans • Squash | Traditional “Three Sisters” planting—beans fix nitrogen, squash shades the soil. |
| Cucumbers | Nasturtiums • Lettuce | Nasturtiums attract pollinators and lure pests away; lettuce acts as living mulch. |
| Eggplant (Aubergine) | Beans • Thyme | Beans improve soil; thyme attracts pollinators. |
| Kohlrabi | Onions • Sage • Thyme | Helps deter cabbage moths and flea beetles. |
| Celery | Tomatoes • Spinach | Tomatoes may deter pests while spinach acts as ground cover. |
| Melons | Nasturtiums • Beans | Beans improve soil; nasturtiums attract pollinators. |
| Peppers | Calendula • Spinach | Calendula attracts aphid predators while spinach suppresses weeds. |
| Potatoes | Beans • Garlic | Beans improve soil; garlic may deter potato pests. |
| Spinach | Strawberries • Onions | Living mulch and insect deterrent. |
| Squash | Beans • Nasturtiums | Nitrogen from beans and pest control from nasturtiums. |
| Tomatoes | Basil • Marigolds • Sweet Alyssum • Dwarf French Beans • Chives • Nettles | Excellent companion combination for pollination, pest control, improved growth and healthier soil. |
🌼 Best companion flowers
| 🌸 Flower | 🤝 Best with | 🌟 Benefits | 🐝 Best Pollinator Plants |
| Marigolds | Tomatoes, Peppers, Beans | Repel aphids, whiteflies & nematodes. | 🌼 Bee Balm (Monarda) |
| Calendula | Peppers, Tomatoes, Brassicas | Trap crop that attracts beneficial insects. | 🌼 Cosmos |
| Nasturtiums | Cucumbers, Squash, Melons | Trap crop for aphids and a pollinator attractant. | 🌼 Calendula |
| Sweet Alyssum | Tomatoes, Brassicas | Attracts hoverflies that eat aphids. | 🌼 Zinnias |
| Dill | Brassicas, Cucumbers | Attracts ladybirds, hoverflies & parasitic wasps. | 🌼 Snapdragons |
| Oregano | Beans, Brassicas | Attracts pollinators and predatory insects. | 🌼 Anise Hyssop |
| Basil | Tomatoes, Peppers | Improves growth and repels aphids and hornworms. | 🌼 Dill |
| Chives | Almost everything (avoid beans & peas) | Repels aphids and other insect pests. | 🌼 Cilantro |
| Thyme | Tomatoes, Cabbage, Strawberries | Repels cabbage pests and attracts pollinators. | 🌼 Lavender |
| Sage | Broccoli, Cabbage, Carrots | Helps deter cabbage moths and flea beetles. | 🌼 Goldenrod |
🐞 Quick pest solution guide
| 🐛 Pest Problem | 🐛 Best Natural Plants Pest Control |
| 🦟 Mosquitoes | Basil • Rosemary • Lavender • Lemon Balm • Mint • Bee Balm |
| 🐌 Slugs & Snails | Garlic • Lavender • Rosemary • Chives • Thyme |
| 🐛 Aphids | Marigolds • Basil • Rosemary • Sage • Chives • Oregano |
| 🥬 Cabbage Moths | Sage • Rosemary • Thyme |
| 🥕 Carrot Fly | Garlic • Sage • Rosemary • Chives |
| 🪰 Whiteflies | Marigolds • Rosemary • Thyme |
| 🪰 Flies | Lavender • Basil • Mint • Marigolds • Peppermint |
| 🪲 Bean Beetles | Marigolds • Rosemary |
| 🕷️ Spider Mites | Chives • Oregano |
| 🥒 Cucumber Beetles | Oregano • Globe Amaranth |
| 🦌 Deer fly | Marigolds • Thyme • Dill • Fennel • Chives • Peppermint |
Seasonal Tip
This is the busiest planting season of the year. Once the risk of frost has passed, plant tender vegetables and flowers outdoors, sow little and often for continuous harvests, and water young plants regularly. June is also the perfect time to begin harvesting your first homegrown crops.
Did you know?
A sunflower can grow over 3 metres tall in a single summer! Challenge your family to see who can grow the tallest one.
Did we forget something important?
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