By Dave Zeldon and Ely Schweyer
Starting the first week of January, seed packets of many vegetable garden delicacies began arriving at your local garden centres. It’s a great time to plan your gardens and purchase your seeds while the selection is good but don't sow your seeds too early!
If started too soon, your plants will be leggy and overgrown long before you can transplant them into the garden. The general rule of thumb (even if yours isn't green), is if the seed packet recommends sowing four to six weeks before the last frost date, it's better to pick the four - rather than the six-week date (to calculate the sowing date, count back from the third week of May).
In this blog post, we’ll discuss the proper timing of the beneficial companion planting practice, to ensure an organic triple-play of pesticide reduction, nutrient sharing, and the fruits of your labour actually tasting better!
What is Companion Planting?
The use of companion plants is an organic approach embracing plant diversity that involves growing certain different types of plants near each other. By mixing a variety of plants together you confuse harmful insects (i.e., the ‘Three Sisters,’ corn, beans, and squash). When you plant certain vegetables together or alongside flowers or herbs, you can often camouflage the scent of a given plant so that its potential enemies can't find it. For example, if you plant onions and carrots together, the Carrot Rust Fly can no longer detect the scent of its "prey," the carrot.
☝️ Plants also share nutrients and amend the soil below ground – in the instance of the Three Sisters, beans fix the nitrogen content of the soil for corn, who has long lost its ability to produce its own nitrogen.
What to Plant?
Herbs Make Excellent Companion Plants
Instead of grouping them all together in a corner, plant them in among your vegetables. Tarragon and marjoram give off a scent that repels most insects. Sage, rosemary, and thyme repel insects that feed on the different plants of the cabbage family. Plant these herbs near your cabbage, cauliflower, and brussels sprouts. Coriander attracts parasitic wasps that are very useful in controlling all sorts of pests.
🖱️ See more on companion planting with herbs here.
Why Not Try Flowers in the Vegetable Patch?
Nothing will make your vegetables happier! Plant borders of alyssum and cosmos; these attract beneficial insects and repel certain harmful ones. Marigolds protect tomatoes from threadworms, and nasturtiums and petunias attract aphids. If you plant them near your tomatoes, the aphids will choose the flowers instead of your tomatoes.
Meet My Plant Friends!
Plant friends are plants that can be grouped together because they mutually help each other grow. Basil stimulates the growth of Tomatoes and enhances the quality of the yield. Chamomile improves the growth and taste of cabbage and onions. It has been found that peas and beans enhance the growth of cucumbers and potatoes. Peas and beans also repel the Colorado Potato Beetle that commonly attacks potatoes and eggplant.
Once you’ve decided who is going where, it’s time to focus on when who is going where.
When To Plant?
It is important to know when the last spring frost date is for your area. Many plants need to be planted after the last frost, so that they don't freeze their little buds off! Follow this guide so that you can have healthy, sturdy little plants that will become good friends in your garden this summer.
| Ten Weeks Before Last Frost Sow indoors: broccoli, brussels sprouts, cabbage, cauliflower, eggplant, lettuce, peppers, and onion |
| Eight Weeks Before Last Frost Sow indoors: tomatoes Sow outdoors: spinach |
| Five Weeks Before Last Frost Sow indoors: marigolds (do not transplant until after last frost) Sow outdoors: peas Transplant: broccoli, cabbage, cauliflower, onion |
| Four Weeks Before Last Frost Sow indoors: cantaloupe, cucumbers, okra, pumpkins, squash, and watermelon |
| Three Weeks Before Last Frost Sow outdoors: carrots Transplant: brussels sprouts, hardened off frost-hardy herbs like chives and oregano |
| Week of Last Frost Sow outdoors: pole beans Transplant: cantaloupe, eggplant, lettuce, okra, peppers, pumpkins, squash, tomatoes, and watermelon |
BONUS: Tips on Ensuring Your Seeds Have the Best Start!
🌱 To ensure success it is always best to use fresh, sterile seed-starting mixture (available from garden centres). Moisten mixture about an hour before sowing; it shouldn't be soggy, just as damp as a wrung-out sponge.
🌱 Follow the information contained on seed packets in terms of timing, lighting requirements, sowing depth, and optimal germination and growing temperatures.
🌱 Lightly water freshly sown flats, then cover with plastic dome lid, or if reusing containers try placing them inside a plastic zip-lock bag. At the first signs of germination, uncover or remove from plastic bag.
🌱 As the seedlings develop, wait until the top of the soil looks dry, water carefully using a small watering can with a fine spray. Avoid over watering: soggy soil and poor air circulation can lead to damping off, a fungal disease that can kill seedlings.
🌱 Locate your seeding flat in a bright window but grow lights or cool fluorescent tubes are better. Keep seedlings about eight to 10 centimetres from light source to prevent plants from becoming too spindly. Plug lights into an automatic timer set for 16 hours on, eight hours off. Be careful if you’re using the windowsill method though, as extremes in temperature may occur from hot drying sunny days to frigid evenings.
🌱 When seedlings have two sets of true leaves (the first leaves are called cotyledons — or seed leaves — so wait for the true ones, start feeding once a week with a balanced (20-20-20), water-soluble fertilizer at half-strength, working up to full strength after a few weeks.
🌱 Finally, the plants which have been raised under sheltered conditions must now be hardened off (see more here) before planting out. Gradually lower the temperature and reduce the watering while exposing the plants to brighter light for seven days prior moving them out to a cold frame. Keep an eye on the weather as sudden changes, as it often happens in spring, could spell disaster to your young plants.
We hope your garden is biodiverse and fruitful this year! For more information – and companion plants – visit Eising Greenhouse and Garden Centre this spring! 🌿
Growing Vegetables in Pots!
A few years ago, I was walking through town with a friend as we discussed planting vegetables in our tiny front gardens. It seemed like an unusual idea until we spotted not one but two front gardens with pumpkin vines rambling amongst the shrubbery. What a novel way to cover the ground without mulch and have the bonus of showy, bright blossoms and bold foliage! Of course, this is eventually followed by the standout feature of brightly coloured pumpkins. It’s built-in fall decorating!
Right now, everyone is looking for ways to reduce grocery bills, and growing a few vegetables amongst the flowers and shrubs can make a big difference. If your garden is on a patio or balcony, there are lots of ways to add edible plants to maximize your space and beautify it at the same time. Who says vegetables can’t be ornamental and beautiful?!
Gaps and Small Spaces
If you have a new shrub and flower garden that has gaps or there’s a space in your garden where you’re not sure what to plant, consider tucking in a potted vegetable. In a cool, shady space, try some luscious lettuce bowls. Shade allows lettuce to grow more slowly in the heat of the summer. Keeping lettuce in a cool, shady spot will prevent it from bolting and becoming bitter.
If you have a small garden, a patio or a balcony, pots with compact varieties and hanging baskets are a terrific alternative for growing vegetables, herbs, and some fruits. These are some of the options we offer at Eising Garden Centre (based on availability) that can be purchased fully planted, or you can grow your own from seed if you have time, space and lights.
Trellised Planters and Patio Pots
For patios, balconies, or even a gap in the garden, there are lots of vegetables that can be grown in a trellised planter.
Tomatoes, peppers, cucumbers and eggplant all love warm soil and growing in pots provides the heat to help them thrive. Eising trellis pots are planted with specific varieties that are smaller but pack a flavourful punch.
Sweet Snackabelle, Candycane Chocolate Cherry or Red, Mocha Swirl and Fresh Bites peppers.
Little Sicily, Patio Hybrid, Candyland Red, Rapunzel and Tidy Treats tomatoes.
Eising Greenhouse also carries eggplants in trellised pots - a patio pot with Patio Baby eggplants is a perfect choice if ratatouille is on the menu!
All of Eising's trellised planters would look lovely plopped into one of our decorative outdoor cover pots!
Herb Planters
Many herbs thrive in a sunny and warm spot with well-drained soil, making a pot the perfect container for them. Herbs also make great companion plants with other vegetables and can be tucked into other pots. Most herbs also love to be harvested frequently, especially when they’re given these ideal conditions.
Lettuce Bowls
Lettuce bowls are a great way to grow greens in small spaces. Our 10” bowls are chock full of a variety of lettuces and are never boring!
👍Tip: Try the “cut and come again” method for harvesting lettuce, which prolongs the plant’s life. Simply pinch off the outer, mature leaves each time you pick the lettuce and leave the centre of the plant to keep growing.
Hanging Baskets
If there’s a spot to hang a basket or place a shepherd’s hook, you will want to grow one of the edible options we offer.
Topsy Tom tomatoes.
Pot-a-Peno and Peppers From Heaven peppers.
Tomatoes, peppers, and strawberries are all available in hanging baskets. Our deliciously sweet everbearing strawberries are also available in 4.5" pots and bareroot, which are great options for window boxes.
👍Tip: Pick strawberries as they ripen to encourage your plants to produce more. Also, remove runners as they grow to allow your plants to send energy into growing fruit instead of bigger plants. Painting rocks to look like strawberries is said to deter birds from feasting on ripe berries.
Citrus and Figs
Consider growing a beautiful and fragrant lemon, orange, fig or grapefruit tree in a patio pot. Just keep in mind that it will need to come indoors in the fall.
Container Plant Care
Whether you’re growing edible plants in the garden, a pot or a hanging basket, don’t forget to give them the care they need to maximize productivity:
- Water regularly, deeply and in the heat of the summer, frequently. Watering early in the morning is ideal. Pour water on the soil, not the foliage to prevent diseases like powdery mildew.
- Feed your vegetables and fruits throughout the growing season with fertilizer or compost.
- Remove dead foliage and prune plants as needed. Especially herbs.
Once you start foodscaping by including vegetables with your flowers and ornamental plants we’re sure you’ll want to keep looking for innovative ways to grow your own food! Who knows, maybe even pumpkins by the front porch!