20 fascinating, little-known gardening facts (2024)

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Hi, guys!

I’ve collected a lot of information about plants over the years, and it occurs to me that some of the facts floating around in my brain aren’t necessarily common knowledge. So here are some lesser-known plant and gardening tidbits that might knock your Crocks off («That’s a good one, right? 😂)

1.Poinsettia flowers aren’t flowers at all. They’re bracts, which are modified leaves.

2.The strawberry is the only fruit with seeds on its outside.

3.Herbs come from a plant’s leaf; spices come from the seed (or other parts). For instance, coriander is the dried seed of the cilantro plant.

4.The world’s most expensive spice, saffron, comes from the stigma of the Crocus sativus flowers.

5.Vanilla beans are the seed pods of the Vanilla orchid.

6.The scales on asparagus stalks are the plant’s leaves.

7.Tree foliage doesn’t turn orange, red or yellow in fall. As the weather cools, leaves lose chlorophyll, the green pigment that masks their true colors in spring and summer.

8.Baby carrots from the grocery store aren’t immature or even dwarf versions of full-size carrots. They’re distorted or marred standard carrots cut into bite-sized, carrot-shaped pieces to appeal to consumers. If you’d like to grow actual miniature carrots, seek out Little Finger, Short n Sweet, Mini Adelaide, Thumbelina or Babette varieties.

9.Each sunflower seedhead comprises 1,000-2,000 tiny individual flowers.

10.Sunflowers start the day facing east, then follow the sun as it moves across the sky to the west.

11.Phyllostachys bamboos are the fastest-growing plants in the world, with some growing more than 1.5 inches per hour.

12.Tomatoes, peppers, eggplants, pumpkins, squash and cucumbers aren’t vegetables. They – and all crops that contain seeds inside of them -- are fruits.

13.Apples and plums are in the rose family.

14.Corn is technically a grass.

15.The bananas we eat today differ from those consumed before the 1950s. Although not entirely extinct, the Gros Michel cultivar was nearly completely destroyed by a fungal disease in the ’40s and ’50s. The Cavendish cultivar found in grocery stores today replaced Gros Michel for the mass market. A variation of the same disease now threatens the Cavendish.

16.The smell of a freshly cut lawn is a distress signal the injured grass sends out to warn nearby plants and attract beneficial insects. Some plants, such as corn, respond by producing bad-tasting chemicals that make them unappealing to predators.

17.Milkweed plants are the only food source for monarch butterfly caterpillars.

18.Figs are technically not fruits but groups of inverted flowers inside a bulbous stem. And, except for some cultivated varieties, those flowers need to be pollinated by a species of Agaonidae wasps that crawl inside to get the job done and then die.

19.Psyllium husk laxatives and fiber supplements are made from the dried seed husks of the common lawn weed broadleaf plantain.

20.Oak trees don’t produce acorns until they are at least 20 years old.

📬 Ask Jessica

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DEAR JESSICA: I have had three variegated gardenias in my yard for nearly 3 years. They have never bloomed. They get a lot of sun, with very hot days in the summer. Is there such a thing as too much sun, and could this be why they’re not blooming?— Barbara Lamm, North Carolina

DEAR BARBARA:Gardenias are beautiful spring-flowering shrubby plants (and sometimes trees) that produce gorgeous, heavenly scented flowers. Their blooming could be affected by several factors:

  • They do like the sun, but you know what they say about too much of a good thing! Gardenias may drop buds and fail to bloom during extended hot, dry spells if they aren’t deeply watered once weekly.

  • If you pruned them last summer or fall, you might have inadvertently removed flower buds as they were forming. Gardenias don’t typically need pruning, but if you find it’s necessary, do so right after they bloom in late spring or early summer, but no later.

  • Flower buds may be deformed (and not develop properly) if your plant doesn’t get enough sunlight, and cold spells could damage them. Neither seems to be the case, but they’re worth mentioning.

  • Confirm that the plant isn’t crowded by trees or plants that might be stealing its nutrient and water resources.

  • Another possibility is too much fertilizer. Even if you haven’t fertilized the tree — but have fertilized a nearby lawn — that could be the source of the problem.

  • Finally, I recommend you test your soil’s pH. Gardenias are acid-loving plants and require a level between 5.0 and 6.5. Test kits are widely available at nurseries and online. If the pH is too high, amend it with elemental sulfur; if it’s too low (unlikely), incorporate ground limestone into the soil to raise it. Follow package directions for the size of the bed.

💡 If you do one thing this week…

Get your garlic into the ground.Here’s how.

Instead of in their usual bed, I planted mine under my new peach tree earlier this week because garlic protects against peach leaf curl disease and chases away many types of pests (and I didn’t break a sweat, thanks to myRotoShovel). The new location frees up one of my raised beds for — I’m not sure what yet (but I am open to suggestions!)

👏 Sunday shoutout

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ReaderLibby Sloanof France (just outside Paris) shares this enchanting photo of “one of my favorite areas this time of year. The sous-bois (forest floor) is covered in wild cyclamens.”

De toute beauté, Libby!

Send in your photo, and you could be featured next (bonus points if you’re in the picture!)

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Don’t forget the poetry contest is still open!

Compose a garden-themed poem — it can rhyme or not; be free verse, sonnet, limerick, slam; an ode to your lawn, your pruners or your blight-stricken tomatoes; a poignant reflection on gardening as a metaphor for your life or whatever moves you when you put pen to paper (or strike those keys) — it’s up to you, justkeep entries to a maximum of seven lines.

A selection of the best submissions will be published here in The Weekly Dirt, and my absolute favorite will receive a copy of the“Leaning Toward Light”anthology, edited by Tess Taylor (Storey Publishing).

Email your poem, along with yourfull nameandfull mailing address(only your name and hometown will be published), tojessica@jessicadamianowith “Garden Poetry” in the subject line.

Submissionsmust be received by 11:59 p.m. on Sunday, Oct. 15 (tonight!)

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20 fascinating, little-known gardening facts (6)

📰This week in my Associated Press gardening column

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I write a weekly gardening column for the AP, so you might have seen my byline in your local paper (or news website) — wherever in the world you happen to be. In case you miss it, I’ll post the most recent here every week.

THIS WEEK:Rose hips add a pop of color to fall gardens — and flavor to teas and jams

LAST WEEK:Dahlias — they’re not as complicated as you think

BEFORE THAT:How to help migrating hummingbirds and see their antics up close

You can readall my AP gardening columns here.

📚📺🎵 Random things I enjoyed this week

I’ve been flat on my back these past couple of days after getting my sixth Covid-19 vaccine. It’s not something I enjoyed, obviously, but Ihaveenjoyed not having contracted the virus yet (I hope I didn’t just put the whammy on myself)! 🤞 Shingles and flu shots are next!

I spent all day yesterday wrapped in a blanket on the couch watching thereboot of Quantum Leap, one of my favorite TV shows from the late ’80s and early ’90s. The new version is just as good! I also broke into the Halloween candy (I had a fever — I deserved it!)

And I’m learning how to spackle walls — necessity is the mother of invention!

This newsletter is member-supported

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I put a lot of effort into researching, writing and producing this newsletter every week, and I couldn’t do it without your support.

If you enjoy receiving The Weekly Dirt and value the information it contains, please consider “buying me a coffee!”

Let’s be friends! Follow me:

📧 How’m I doing?

I welcome your comments and suggestions, so pleasesend them along— as well as any topics you’d like to see covered and questions you’d like answered in the Ask Jessica section.

Until next week, stay safe. Be well. And always keep your mind in the dirt. —Jessica

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20 fascinating, little-known gardening facts (2024)

FAQs

20 fascinating, little-known gardening facts? ›

Forest gardening, a forest-based food production system, is the world's oldest form of gardening. After the emergence of the first civilizations, wealthy individuals began to create gardens for aesthetic purposes.

What is the oldest form of gardening? ›

Forest gardening, a forest-based food production system, is the world's oldest form of gardening. After the emergence of the first civilizations, wealthy individuals began to create gardens for aesthetic purposes.

What is the hardest thing about gardening? ›

Spacing plants appropriately is one thing that many of us struggle with for our entire gardening lives. When we start planting our bedding plants in the garden, it seems like the recommended spacing is way too generous.

What is the fastest growing plant in the world? ›

Bamboo is the fastest-growing plant on Earth. In fact, the Chinese moso bamboo can grow almost a metre in a single day. Bamboo grows in dense forests where little light reaches the ground and there is strong evolutionary pressure to reach the sunlight as quickly as possible.

What is the biggest plant in the world? ›

The world's largest plant is the Poseidon's ribbon weed, a seagrass that covers about 77 square miles.

Do plants react to sound? ›

Plants are responsive to environmental stimuli such as sound. However, little is known about their sensory apparatus, mechanisms, and signaling pathways triggered by these stimuli. Thus, it is important to understand the effect of sounds on plants and their technological potential.

What was the first garden in the world? ›

1. The Gardens of Sigiriya (5th century, Sri Lanka) The oldest garden of all (which is also our header image) is on an archaeological site. It was probably created to decorate the imperial citadel of prince Kasyapa, between 477 and 495 CE.

What is the oldest living vegetable? ›

The oldest known vegetable {The Pea} is the one found in Stone Age settlements dating to 8,000 to 10,000 years ago. This historic vegetable, the Pea. Humans have cultivated vegetables heavily over the millennia, but the vegetables eaten in prehistoric times differed from those we heartily consume today.

What is the oldest garden in the US? ›

1728 Botanical Garden in Philadelphia founded

John Bartram of Philadelphia establishes his botanic garden, known to be the oldest surviving of its kind in North America.

What is the toughest plant to grow? ›

What Is the Hardest Plant to Keep Alive? The list of the hardest plants to take care of varies from gardener to gardener. However, the lists often feature Orchid, Gardenia, Fiddle Leaf Figs, and Boston Fern.

What is the hardest vegetable to grow in the world? ›

What is the hardest vegetable to grow? Some say it is wasabi. It's hard to get access to the seeds, and it is very finicky in regard to watering, temperature and nutrition. It also grows slowly.

What is the hardest plant to farm? ›

There are dozens of reasons why farmers consider wasabi the most difficult crop to grow of all time. The wrong nutrient composition or too much humidity will kill wasabi. It is extremely susceptible to diseases and bugs when grown in large scales.

What is fun about gardening? ›

Gardening is an activity that's good for both the mind and body, and can be enjoyed by people of all ages. Plus, you get to eat the delicious fruits, vegetables and herbs that you grow. So, grab your tools and get in the dirt! It only takes a little bit of gardening to work up a sweat.

What is special about gardening? ›

Gardening invites you to get outside, interact with other gardeners, and take charge of your own need for exercise, healthy food, and beautiful surroundings. If you're digging, hauling, and harvesting, your physical strength, heart health, weight, sleep, and immune systems all benefit.

What are plants facts for kids? ›

Most plants have several things in common. They need sunshine, water, and air to grow. They are not able to move around. Their cells have stiff walls made of a tough material called cellulose.

What is a hobby of gardening? ›

Gardening is a hobby that encourages children to get out of the house, get their hands dirty, and learn a little about plants and nature. Children can learn several lessons when they start gardening, such as The importance of plants and the need to take care of them.

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