Category Archives: Garden Advice

Vertical Gardening: The Beginners Guide to Trellising Plants

by Jordan Charbonneau, photos by Ira Wallace

Traditional wooden vegetable garden trellising at Thomas Jefferson’s Monticello

In my dreams of a picturesque garden there are always trellises. They may bring to mind quaint little fairy tale cottages, but trellises aren’t just for their good looks. There are so many plants that can be grown on a trellis and so many reasons to grow them that way.

Why trellis?

Trellising saves resources.

Want to grow more vegetables in little spaces? Grow up! One of the easiest ways to make the best use of small garden spaces is by growing plants on trellises. Plants like pole beans are extremely productive and can be grown in narrow rows if trellised.

Trellised plants also use less water. Instead of watering an entire sprawling plant you can just water the base where the plants roots are located.

Trellises add structure.

Adding structure and height to a garden is often done to make gardens more beautiful. but there are other benefits too. Song birds will appreciate having places to land in your garden and they can help control insect populations.

Having the plants up off the ground also increases air flow and can help minimize plant diseases.

Trellises add shade.

Trellising plants can also help you add much needed summertime shade. A vining vegetable crop like cucumbers can be grown on a slanted trellis above a bed of a cool weather vegetable like lettuce, thereby helping you to grow a late season crop. Deciduous perennials (those that drop their leaves in the fall) can be grown on trellises on the southern side of houses to shade the home in the heat of summer and let the sun through in the winter. Some plants, like pole beans, gourds, and flowers like morning glories, have such long vines they can easily cover small structures (like teepees) making excellent summer forts for kids.

Trellised plants are easier to harvest.

Vegetables on trellises also tend to be easier to harvest. Instead of searching through a sprawling jungle of squash plants, you can easily spot them hanging from a trellis. Plus there’s little or no bending over. The fruits also tend to be cleaner and more uniform, perfect for market growers.

What can be trellised?

Decorative wrought iron trellis at Atlanta Botanical Garden

Many plants do well on a trellis and some require one. Below are some of the vegetables, flowers, and perennials that make ideal candidates for trellising.

Vegetables Flowers Perennials
Cucumbers Sweet Pea Hops
Pole Beans Morning Glory Hardy Kiwi
Peas Clematis Grapes
Melons Nasturtium
Gourds
Squash
Pumpkin
Indeterminate Tomatoes 

How do I make a trellis?

There are tons of trellis designs and it can be hard to choose. The major deciding factors will be your garden’s style, your budget, the materials you have on hand, and which plants you plan to trellis. Trellises can be whimsical, practical, or a mix of both. They can be shaped as arches, forts for children, or simple fences.

Use natural materials.

Many people choose to make simple teepees like these which can be made from bamboo, straight saplings, or branches, and held together with twine or wire. There are also many different shaped designs using the same materials.

Use fencing.

Cattle panel arch trellis at Heritage Farm

Hog panels or sections of wire fencing are another popular choice. Hog panels and sturdier fencing can be used two ways: as a fence or bent over as an arch.

Purchase or build trellises from lumber.

If you have money to purchase trellises or a knack for woodworking, there are designs for folding trellises that can be stored each season as well as more creative designs. You can also install large trellises in front houses or over patios.

Repurpose junk.

Some people also repurpose old junk into awesome trellises. Things like iron bed frames and gates, old umbrella frames, and old antennas are great for climbing plants.

When designing any trellis it’s important to think about what you’re growing. Is it a permanent trellis for a perennial that will be in the same spot for years or something you’ll want to rotate next year? You’ll also need to decide on the size. Obviously pea plants require smaller trellises than grape vines. Some plants, like pumpkins, melons, and larger squash varieties, will need sturdy trellises to support the immense weight of their fruit.

How do I trellis plants?

Some plants (including morning glories, beans, and cucumbers) are easy to trellis. Simply sew seeds next to a trellis and they’ll do the work. Some plants, like tomatoes, need a little help: they need to be manually trellised. You can use tomato-specific trellis methods like the “Florida Weave” which surrounds the plants with twine. Or use traditional trellises and attach plants with tomato clips or even old scraps of fabric. Just be sure that your method does not cut into the plant as it grows.

Tomato trellis of string weaving at Twin Oaks Community Farm

For some large-fruited plants like pumpkins, melons, and large squash varieties, you may need extra support. You can create small “hammocks” for each fruit from an old shirt or other stretchy material that can be tied off to the trellis as the vine cannot support the fruit’s mature weight.

If you’re ready for a super productive and beautiful garden this year it’s time to get some trellises ready! The best time to add trellises is before planting, not after, so don’t delay! It’s finally spring and setting up trellises is a great way to get out in the garden.

Want to know more about trellises? Check out these posts:

https://blog.southernexposure.com/2014/12/ridge-gourds-on-cattle-panel-trellising/

https://blog.southernexposure.com/2013/07/trellising-with-bamboo/

Easy Bamboo Bean Teepees

What plants have you grown on a trellis?

How to Choose the Right Tomato Varieties for Your Garden

Radiator-Charlie's-Mortgage-Lifter-tomato-SESE-web

By Ira Wallace, with Lisa Dermer

Mention summer gardens and the first thing to come up is which tomatoes are you growing? Year after year tomatoes are one of the most popular vegetables grown by our customers.  In our 2017 catalog we offer more than 100 different tomato varieties. There are currant tomatoes as small as a dime and big beefsteaks like Mortgage Lifter and Brandywine that can weigh well over a pound (plus every size in between and more shapes than most gardeners can imagine). In addition to the ever popular red and pink varieties there are orange, yellow, black, bi-color and even green varieties. We offer something for every gardener, but how to decide which to grow this year?

There are many criteria that could be used but these four are basic for me:

1. Flavor and texture – the first thing I consider is fruit qualities like flavor and texture for the sandwiches, sauces, and salads we like to eat. Radiator Charlie’s Mortgage Lifter tomato (photo top) is a large heirloom slicer with superb flavor, but be prepared for its long season and indeterminate growth habit (read on).

2. Days to maturity – is not just important for those with a short growing season. In many areas of the Southeast there are two seasons for tomatoes and other summer vegetables. The period in late July and August when it is too hot for tomatoes and sweet peppers to set fruit well, means we grow two crops: one to mature before the hottest spell, and one after. Fast-maturing early and medium days to maturity varieties are really important in such areas. Stupice is a favorite early variety: the small-to-medium size fruits have excellent heirloom-type flavor. We also list several Extra-Early tomatoes.

matts wild cherry tomato SESE

3. Growth style– there are two main growth habits for tomatoes:

-Determinate varieties that grow to a certain height (usually 2-3ft) then stop growing and mature all of the fruit in a short period of time.  Many paste tomatoes are determinate. These varieties are great for canning and well suited to growing in short or split season areas

-Indeterminate tomatoes keep growing, flowering and setting fruit until stopped by frost, disease, or really bad weather. Most Cherry and large beefsteak tomatoes are indeterminate, They need to be caged or staked with a really sturdy support.  Most really large heirloom tomatoes are indeterminate. These varieties are great if you have plenty of space, warm summer temperatures, and a long enough growing season. Delicious and super productive Matt’s Wild Cherry (photo) is a very small cherry tomato with tall, determinate plants.

-The Dwarf Tomato Project has given gardeners a new set of options, with short (2-4 feet tall) plants bred from heirlooms, and retaining heirloom flavor quality, that are easier to trellis and to grow in containers. We offer Rosella Purple, for diminutive plants with fantastic fruits similar to Cherokee Purple.

4. Disease resistance-Find out which diseases are common in your area and select resistant varieties whenever possible. As organic gardeners our first line of defense is prevention. When reading a seed catalog or looking at the back of a seed packet, disease resistances are often shown with an abbreviation after the name. For example verticilium (V) and frusarium (F) wilts are common soil-borne tomato diseases. Look for the V or F after the variety name. Nematodes (N) are  another common disease with resistant varieties available. Roma VF and Tropic VFN are excellent disease resistant varieties and show how the disease resistance is sometimes incorporated in the name.

More resources on www.SouthernExposure.com for tomato growers:

Five Inspiring Reasons to Grow Your Own Transplants

greenhouse-seedlings

Why grow your own transplants from seed?

1. The transplants you grow at home are often healthier, sturdier seedlings than any you could buy. (Seedlings should be short and sturdy, not long and spindly.) That means they’ll suffer less transplant shock, which often means better production.

2. You can time them so they’ll be just the right age when you’re ready to transplant (seedlings you buy are often over-old). This makes for a better start on life and healthier plants overall.

3. You’ll know the full life of your plants, and avoid introducing unknown pesticides or other chemicals into your garden.

4. When you grow your own transplants, you’ll usually end up with your more plants than you need, so you can share or trade with friends or neighbors.

5. Our favorite reason is that sowing your own lets you choose from a much, much larger number of varieties. While the situation is improving, there are still often only a handful of varieties commercially available as plants. The majority of our gardening diversity is only available to gardeners who grow from seed!

At the farm at Southern Exposure, March is when we sow our first round of nightshade crops. We’ll sow another round in late spring: where summers are hot, it’s best to sow a second, later batch for harvest in late summer and early fall. The same plants you put out in spring will be scraggly come September.

We sow peppers first, timing them to be 8-weeks-old at transplanting. Next we sow tomatoes and eggplants, timing the tomatoes to be 6-weeks-old at transplanting. The eggplants go in the ground a couple weeks after the tomatoes.

If you don’t have a greenhouse or cold frame to gow your seedlings, you can grow them inside your house. We recommend growing seedlings under grow lights indoors.