Can I grow these flowers in jars until they're seedlings?
Hollyhock, Zebra Mallow, Blue Passion Flower, Giant Milkweed tree, and Swamp Milkweed.
- rationalityLv 59 years agoFavorite Answer
As long as you don't over-water them, the only problem will be getting them out of the jars (if you mean glass jars) when it's time to transplant them.
Vines usually grow better without transplanting, though, so you might wait till you can plant the passion flower directly into where it will grow.
With the others, you'll just have to be careful not to disturb the roots unduly when it's time to transplant them. If you can get the whole ball of dirt out in one go, then you should be okay.
Personally, I'd stay away from glass. Just too easy to have an accident. You can just as easily use things that don't shatter, like metal cans or plastic jars, if you can't get proper starting containers to use.
- mindshiftLv 79 years ago
It's better to use plastic cups so you can cut slits along the bottom for drainage. While all of these plants like moist soil, they don't like wet soil. Every one of these (except the giant milkweed tree) will grow in average garden soil. They prefer moist, but well-drained soil. A jar has no drainage. If you are concerned the plants might dry out too much, set the cups in a tray with about 1/2 inch of water. The water will seep in through the slits and wick upward. Allow the soil to dry a bit between waterings. More plants die from over watering than under watering.
- 9 years ago
Jars, plastic cups ... Usually dry out quicker, which means more watering. More watering means fungus and slime. Which, would result in root rot. Try peat pots or starter trays. That way your not tempted to let the seedling get to big before transplanting ( watering and transfer issues ).
You can grow a cactus in a glass jar ...
Or some drought tolerant flowers, you could have some pretty rocks at the bottom of the jar for drainage.
- reynwaterLv 79 years ago
You could germinate them in jars...then risk killing the delicate seedlings when you transplant them.
You'll have better luck planting directly in pots of soil or in the ground.