# How to Grow Geraniums from Seed: Stunning Best Tips

- Link: https://lifeandwork.blog/gardening-how-to-grow-geraniums-from-seed/
- Published: 2026-10-24T02:26:13-05:00
- Author: Bert Swope

When you learn how to grow geraniums from seeds, you’ll have a whole new garden 
in no time. This guide will teach you where to plant your geraniums, when to plant
them, and which varieties are best. Read on for more information! Listed below are
the steps to growing geraniums from seed. Read on to learn how to grow geraniums.

## Where to Plant Geraniums

If you’re wondering where to Plant geraniums from seed, there are several factors
you’ll want to consider. The daytime temperature should be at least 70 degrees Fahrenheit,
but they can thrive at even cooler temperatures. Geraniums will grow much faster
under a fluorescent light positioned four to six inches above the plants. The lights
should remain on for twelve to sixteen hours a day. Geraniums will also grow well
if they receive proper sunlight; however, the light should be at least seventy percent
of the total daytime temperature.

Geranium seeds are best started indoors in small pots. They germinate at a temperature
of 75 degrees Fahrenheit. For best results, moisten the seed prior to sowing. After
24 hours, place the seedlings in a larger container. Keep the pot moist with a mister.
Germination time depends on the variety. Geraniums can take anywhere from five days
to four weeks to begin blooming.

## When to Plant Geraniums

When to Plant Geraniums from seed depends on several factors. First of all, you 
must know when the seed pods are ready to harvest. Geraniums have five seed pods
at the base of their flower spike. The unripe seeds are green, but they will soon
turn black, and you must remove them as soon as possible to avoid losing them to
the wind. Seeds are also very expensive, sometimes costing up to $15 per packet,
so if you are not prepared to shell out that much money, consider buying cuttings
and starting from seed.

Before planting geraniums from seed, they should be hardened off over a week in 
a cool, sunny window. Nighttime temperatures should be 65-70degF, so the plants 
need at least twelve hours of light. After the seedlings are hardened, you can transplant
them into the garden once the risk of frost has passed. Geraniums do best in full
sunlight, so make sure you choose a location where they get plenty of direct sunlight.

## How to Plant Geraniums

There are many different ways to plant geraniums from seed, and each one has its
own special requirements. Geraniums need rich, well-drained soil that retains a 
good amount of organic matter. They are not suited for gardens with clay soil, but
can be planted in heavy soil amended with peat, compost, or perlite. Avoid adding
manure, vermiculite, or other forms of fertilizer.

Start by buying good quality seedlings. The seedlings are very attractive and smell
great. However, if you want to increase your selection of colors, you may want to
buy the geranium seeds. There are many sources of quality geranium seeds online,
or at a local nursery. Make sure you buy a good-quality variety, as they may cost
as much as several plants.

Soak your seeds for up to two weeks before transplanting them outdoors. The daytime
temperature should be 70 degrees and nighttime temperatures should not drop below
55 degrees. Geraniums grow slowly from seed, but if soaked properly, they should
start blooming about 12 to 16 weeks after sowing. Once your seedlings have rooted
and started growing, you can transplant them into a larger container. You may also
want to pinch their tips if they seem to be spindly. This will help them grow bushier.

## Geraniums Varieties

Growing geraniums from seed are the most economical way to start your flower garden.
Cuttings are expensive, require higher-tech equipment, and often do not root properly.
Seed geraniums are vigorous and grow freely. Seed geraniums come in a wide variety
of colors. However, seed geraniums’ flower heads are not as showy as the vegetative
ones, but breeders are working to develop brighter varieties that can compete with
their vegetative counterparts.

To grow geraniums from seed, you should select a cell flat that has a surface area
of at least one square foot. A cell flat with 72 planting holes will start many 
seeds, but won’t give the plants enough room to grow. Use a larger cell flat, which
will accommodate 24 or 36 seedlings and allow for ten weeks of indoor growth. This
will ensure that the plants get adequate light and air circulation.

A few types of geraniums are hardy. In colder climates, these plants are protected
by mulch, so they do not need to be moved to a warmer location. Other types, like
the Martha Washington geranium, require a cooler climate to thrive. These plants
will stop flowering if the temperature is too hot. Unlike the other classes of geranium,
they need to be watered regularly to keep their leaves and flowers healthy.

## Watering Geraniums

You can start geraniums from seed, but you should make sure you’re getting the right
amount of moisture. Seed-grown geraniums usually have one single row of petals and
don’t tolerate persistent dry conditions well. This means that you’ll need to deadhead
them as they grow. If you don’t want to deal with that, you should try to purchase
cuttings. You can also buy “designer” geraniums that feature double or semi-double
petals and are up to 3 feet tall. Cuttings aren’t viable seeds and don’t produce
seeds, so you should make sure your geranium is compatible with your climate before
buying it.

You can also water geraniums from seed once they have been established. Geraniums
prefer rich, loose soil with plenty of organic matter. If your soil is too heavy
for geraniums, you can amend it with peat, compost, or perlite. Avoid using manure
or vermiculite. It’s better to add compost to your soil if it’s too heavy for geraniums.

## Fertilizing Geraniums

When you’re growing geraniums from seed, it is important to understand what the 
soil is like and whether it’s adequate for geraniums. Mineral soils and soilless
mixes are both similar in many ways and are both good choices for geranium cultivation.
The difference is in the degree of chemical and physical properties. Soilless mixes,
on the other hand, are designed to be geranium-friendly and allow for greater flexibility.
Specifically, they contain a good level of porosity, which facilitates water management
and allows for better soil aeration.

Geranium seeds should be moistened before sowing. A moist paper towel placed inside
a plastic container with a lid or a plastic bag should hold the seeds for twenty-
four to thirty-six hours. After that, the seeds should germinate, or if they don’t
germinate in twenty-four hours, they were not sufficiently moistened. After sowing,
it is best to start geraniums in a larger pot or container.

## Geraniums Pests And Diseases

There are many advantages of growing geraniums from seed. These plants are slow-
growing and take a long time to bloom. However, you can get them in a wide variety
of colors from seed. You can choose between hybrid or seed varieties. For added 
interest, you can also choose variegated geranium varieties. Geraniums grow slowly,
so be patient and patiently wait for the plants to bloom.

To begin your geraniums, you must scarify the seeds. This process pierces the seed
hull, promoting germination. You should then place the seeds in equal parts of sphagnum
peat and vermiculite. Make sure to space the seeds at least two inches apart. Cover
the seeds lightly with a growing medium and keep at 72 degrees Fahrenheit until 
they germinate. Geraniums need six hours of indirect sunlight daily. You can also
grow them under white fluorescent lights for 14 hours a day.

In the beginning, you must ensure that the environment is free from damping-off 
and other diseases. To avoid damping-off, choose a spot where nighttime temperatures
are consistently over 10degC. Then, wait at least two weeks before transplanting
your seedlings outdoors. If you plant them in a window, they will not grow well.
You must also provide a good drainage for your plants. Geraniums do not require 
much fertilizer. Once every two weeks, you should apply a diluted solution of fertilizer.

## Harvesting Geraniums

Geraniums produce seed around their flower stems. Seed heads mature mid to late 
June in western New York. As seed ripens, the stalk of the flower begins to dry 
and bow slightly. When the stalk stretches again, the seed flies away several feet
from the plant. Seed heads ripen over a two or three-week period. Once mature, the
geranium flower blooms again, producing another round of seeds around the stem.

To harvest the seeds from your geraniums, collect the mature flower heads. Remove
the petals and seeds from the flower head using a knife or scissors. Place the seeds
on waxed paper and allow them to dry for a week or so. Then, remove the seed husks
and place the seeds in a plastic bag or envelope. Geranium seeds can be stored in
the refrigerator or a cool, dry spot. They are usually viable for one year after
being harvested.

Before transplanting seedlings to the outdoors, you must harden them off. The soil
must be 70 degrees F during the day and no lower than 55 degrees F at night. Place
the seedlings in a shady spot for two weeks, and then move them to a brighter location.
The plants will look healthy after two nights. After that, they should be ready 
for planting in mid to late May.

How to Grow Geraniums from Seed

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