can zinnias grow indoors

You can grow zinnias indoors if you grow them under fluorescent grow lights or in a greenhouse. ... Zinnias will last for months indoors if you remove the faded flowers. Prepare the growing containers. Fill 6-inch to 8-inch pots to within an inch of the top with indoor potting soil, the kind that has fertilizer in it.

Can you keep zinnias indoors?

Zinnias may be started indoors or directly in the garden. If you have good conditions for growing them indoors such as plant lights, a heat mat for germination, then you can get a head start by starting them indoors.

Can you grow zinnias in pots?

You can plant them all the way through July for blooms until frost. 5 Zinnias will grow in large containers but not well in small pots. Choose a pot at least 12 inches across for best results. Taller growing varieties, such as State Fair, need the largest pots.

Do zinnias come back year after year?

Zinnias are one of the easiest flowers to grow, as they grow quickly and bloom heavily. ... Zinnias are annuals, so they'll grow for one season and produce seeds, but the original plant will not come back in subsequent years.

Can you bring zinnias in for the winter?

True annuals such as vinca, zinnias and marigolds are eventually going to croak even if you try to milk them through winter. If you're light on space inside, take in the most tender plants that you really don't want to risk losing and then store the rest in pots, in soil, in the garage.

How often should I water Zinnia?

* Water zinnias at ground level to prevent fungus. Once they are 3 to 4 inches high, water them deeply a couple of times a week, depending on weather. Zinnias aren't drought tolerant, but they like their soil a little on the dry side. The soil should not be continuously wet.

What month do you plant zinnias?

Planting: Plant zinnias in spring after all danger of frost has passed, around the same time you'd plant tomatoes. Zinnias are easy to grow directly-seeded into the garden. For sooner blooms, start seeds indoors 4 to 6 weeks before your last frost date.

Do zinnias self seed?

Zinnias (Zinnia spp.) reseed easily, creating a cut-and-come-again garden each summer. ... Zinnia haageana "Persian Carpet" and Zinnia elegans "State Fair" and "Liliput" are a few of the heirloom varieties that grow in U.S. Department of Agriculture plant hardiness zones 1 through 10 and reseed each year.

Should I soak zinnia seeds before planting?

Seeds can be planted indoors 6-8 weeks before the last frost and the seedlings can be easily transplanted into your outdoor garden later on. Remember that germination is less successful in cold soil. Moreover, it is best to soak dried seeds in water for 4-6 hours before planting.

Should I deadhead my zinnias?

Deadhead Zinnias to prolong blooming time. Zinnias flourish when they are deadheaded and it encourages the flower to continue to bloom. Once the flower begins to fade, remove it from the stem. You can either pinch the flower off or use a small pair of garden shears to cut them off.

Are zinnias poisonous to dogs?

Zinnia. Add zinnias to your no-nonsense list of hard-performing annual flowers, and rest easy knowing that they aren't toxic to your pets, either.

Will zinnias rebloom after cutting?

Zinnias are a “cut and come again” flower, so when you cut the plant “hard,” it responds by sending out even more long, strong stems all season long.

What do you do with zinnias in the winter?

Preparing Annuals for Winter

During the growing season, gardeners often deadhead or snip off spent flowers from favorite annuals, like zinnias (Zinnia spp.) and marigolds (Tagetes), to stimulate repeat blooming.

Can I keep geraniums in pots over winter?

To overwinter geraniums, bring them indoors prior to frost. If you are growing them in a tub or container and time is at a premium (as it usually is in fall), simply drag the entire pot indoors where they should keep for a few weeks while you tend to other more pressing garden chores.

Can you keep annuals alive indoors?

The plants that adapt best to life indoors are the tender perennials grown in cold climates as annuals because they won't survive the harsh winters. ... These include popular garden plants such as geraniums, coleus, wax begonias, heliotrope, and impatiens.

Do zinnias bloom all summer?

The Benary's Giants have large, double blossoms, 4 to 6 inches across, available in a rainbow of colors and features improved mildew resistance. Photo by: Shaikh Meraj / Shutterstock. Fully double flowers bloom all summer on this heat-loving zinnia.

How long do zinnia plants last?

In addition to zinnias' spectacular garden show where ever you need a burst of color, zinnias are an incredible cut flower. Many varieties of zinnias will last from seven to 12 days in a vase.

Can you grow zinnias from cuttings?

Zinnias are so easy to grow AND they're gorgeous. ... It's for this reason that I've found an interested in propagating zinnias from cuttings and rooting stems in water. Taking cuttings is really easy. All I do first, is make a cut below one of the leaf nodes.

Can you overwater zinnias?

Zinnias are somewhat resistant to dry conditions, but will only grow well if watered regularly. Supply at least an inch of water every week during dry, hot weather. When watering, soak the soil so that it is moist, but not soggy. Never over-water because this will cause water-logging.

Why are my zinnias dying?

A: Zinnias can be prone to several bugs as well as the most common problem -- powdery mildew, which is a disease that turns the leaves whitish, then brown. The holes could be due to Japanese beetles or to a couple of other smaller beetles that sometimes eat zinnia leaves.

How do you know if zinnia seeds are good?

Once the flower heads are completely brown and dry, grasp the petals and pull them out of the center of the flower. You should see seeds clinging to the ends of those petals. The seeds will be arrowhead-shaped, pointed on one end and broader on the other, each having a raised spine running up its back.