Begonia Fertilizer for Foliage & Flowering Begonias

When your begonia may benefit from feeding

When foliage begonias are producing fresh patterned leaves in bright filtered light
When flowering begonias are actively making stems and new flower buds
When a container begonia has resumed growth after repotting into a well-draining mix
When established begonias in baskets need nutrient replacement during repeated watering

Some tuberous begonias enter dormancy; do not fertilize dormant tubers or use fertilizer to compensate for waterlogged soil.

Results you can see

Feeds foliage for deeper color and a brighter, more lively look.

Encourages fresh leaf and stem growth for a fuller, thriving plant.

Supports healthy, resilient roots that absorb nutrients more effectively.

Works for begonia varieties

Rex Begonias
Angel Wing Begonias
Wax Begonias
Tuberous Begonias
Polka Dot Begonia
Rieger Begonias
Dragon Wing Begonias
Bonfire Begonias
Begonia

Label facts

NPK 3-1-2 with 1% calcium and 0.5% magnesium, plus iron, manganese, zinc, boron and copper.

Derived from kelp (ascophyllum nodosum), potassium phosphate, potassium nitrate, calcium nitrate, magnesium nitrate, boric acid, copper sulfate, ferric sulfate, manganese sulfate, zinc sulfate, ammonium nitrate.

One 8 oz bottle makes 48 quarts of feed at 1 tsp per quart — the 32 oz makes 192.

Store cool and dark. Guaranteed 12 months from purchase; keeps up to 2 years.

How to care for begonias

Light

Bright, indirect light suits rex and wax begonias, and a few hours of gentle morning sun is fine. Hot afternoon sun bleaches the leaves and crisps their edges.

Water

Water when the top inch of mix is dry, aiming at the soil rather than the foliage. Begonias sulk in soggy mix, so let the excess drain away fully.

Soil

A light, airy potting mix of peat or coco with plenty of perlite. Shallow pots suit their fine roots, and drainage holes matter more than pot size.

Humidity

They prefer humidity of 50 percent or more. Group plants together or set the pot on a pebble tray, but skip misting the leaves, which invites powdery mildew.

Feeding

Feed Begonia Fertilizer every two weeks through spring and summer while new leaves are forming, then about once a month in fall and winter when growth slows down.

Pruning

Pinch the growing tips on angel wing and dragon wing types to keep them bushy, and remove spent flowers and yellowing leaves so air moves through your begonia.

Frequently asked questions

Why are my begonia leaves getting crispy edges?

Usually low humidity or a buildup of fertilizer salts in the pot, and sometimes both. Begonias hold thin leaves that lose moisture quickly near heating vents and in dry rooms, so the edges brown first. Salt buildup comes from feeding too strong or from never rinsing the mix. Begonia Fertilizer is meant to be used at its recommended dilution mixed into normal watering, which keeps the salt level steady; flush the pot with plain water every month or two, and move your begonia away from vents and drafts.

How often should I feed my begonia?

Begonia Fertilizer is designed for regular, light feeding through the growing season. Feed every 1–2 weeks in spring and summer while your begonia is actively producing leaves and flowers, then drop to every 4 weeks in fall and winter as growth slows and lower light limits what your plant can use. Mixing it into your regular watering at the recommended dilution keeps nutrition steady, which suits begonias better than an occasional heavy dose.

Is this right for flowering and foliage begonias?

Yes. Begonia Fertilizer is formulated for the genus as a whole, so one formula supports the deep leaf color and pattern of rex and cane types alongside steady blooming on wax and rieger begonias. The difference between the groups is what they show off, not what they need from the soil: both draw on nitrogen for new leaves and on phosphorus and potassium for flowering and sturdy stems. Feed a mixed collection on the same schedule.

Which begonias can I use it on?

All of them. Begonia Fertilizer is built for the whole group: rex begonias, angel wing and dragon wing begonias, wax begonias, tuberous begonias, polka dot begonia, rieger and bonfire begonias, and the rest, indoors or out. They share the same basic appetite even though some are grown for foliage and others for flowers, so one bottle covers a mixed collection on one schedule, whether your begonias are in a windowsill pot, a hanging basket or a shaded bed.

Will this burn my plant?

Begonia Fertilizer is a dilute liquid feed, and dilution is what matters here. Fertilizer burn happens when concentrated salts sit against the roots: too much product in too little water, or granules piled at the base of a plant. Mixed at the recommended dilution and applied every 1–2 weeks in the growing season, the nutrients arrive in solution at a strength the roots take up as they water, spread evenly through the mix rather than concentrated in one spot. If you ever mix too strong, flush the pot with plain water until it drains freely.

When will I see results?

New growth usually looks greener and fuller within two to four weeks of consistent feeding with Begonia Fertilizer, since a liquid feed is available to the roots from the first watering. Older leaves take longer to change and may not recolor fully; the clearest difference shows in the leaves and flower buds that form after you start. On flowering types, bloom response follows your begonia's own cycle over the season rather than arriving in the first week.

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